{"title":"Mellanox Network Adapters","description":null,"products":[{"product_id":"used-mellanox-connectx-5-mcx516a-ccat-100gbe-dual-port-pcie-3-0-network-adapter","title":"Used Mellanox ConnectX-5 MCX516A-CCAT 100GbE Dual-Port PCIe 3.0 Network Adapter","description":"\u003ch2\u003eNVIDIA Mellanox ConnectX-5\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNVIDIA Mellanox ConnectX-5\u003c\/strong\u003e is a 10\/25\/40\/50\/100GbE + EDR\/HDR100 InfiniBand network adapter by NVIDIA Mellanox, featuring PCIe 3.0 x16 host interface, RoCE v1 \u0026amp; v2, RDMA over IB (EDR 100G \/ HDR100 100G) RDMA support, and NVMe-oF target\/initiator hardware offloads. With \u0026lt; 0.8 μs RDMA RDMA latency, it enables zero-CPU-copy data movement for HPC, AI\/ML, and storage workloads.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eCondition: Refurbished \/ Pre-owned — fully tested, cleaned, and verified. Ships with warranty coverage.\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;\"\u003e\\\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;width:35%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\\\n\u003ctbody\u003e\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnectX-5\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeeds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\/25\/40\/50\/100GbE + EDR\/HDR100 InfiniBand\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLane Config\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1×100G \/ 2×50G \/ 4×25G (QSFP28); 1×25G (SFP28); 1×100GbE HDR (QSFP28)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePcie\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCIe 3.0 x16\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRdma\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoCE v1 \u0026amp; v2, RDMA over IB (EDR 100G \/ HDR100 100G)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEthernet, InfiniBand EDR\/HDR100 (VPI dual-mode)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOffloads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNVMe-oF target\/initiator, VXLAN, SR-IOV, GPUDirect RDMA, GPUDirect Async, Advanced Switching\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.8 μs RDMA\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 30W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is the ConnectX-5 adapter?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eThe Mellanox ConnectX-5 is a dual-mode 100GbE\/InfiniBand VPI adapter with RoCE v2 and IB RDMA, NVMe-oF, and GPUDirect RDMA—the most versatile adapter for mixed Ethernet+IB datacenter deployments.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eDoes ConnectX-5 support both Ethernet and InfiniBand?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eYes. ConnectX-5 VPI adapters can operate in Ethernet or InfiniBand mode (EDR 100G or HDR100 100G) per-port, enabling flexible deployment in mixed environments.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is GPUDirect RDMA on ConnectX-5?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eGPUDirect RDMA allows NVIDIA GPUs to read\/write network data directly without CPU involvement, reducing latency to \u0026lt;0.8 μs and enabling peer-to-peer GPU communication for AI training.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eHow does ConnectX-5 compare to ConnectX-6?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eConnectX-6 adds 200GbE HDR InfiniBand, PCIe 4.0 x16, and advanced crypto\/security offloads. ConnectX-5 is ideal for 100GbE deployments; ConnectX-6 for 200G\/HDR interconnects.\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003e\u003cem\u003eAvailable at \u003ca href=\"https:\/\/zhongxindata.hk\"\u003eZhongxin Data\u003c\/a\u003e — enterprise network hardware specialists. Worldwide shipping from Hong Kong.\u003c\/em\u003e\u003c\/p\u003e","brand":"NVIDIA Mellanox","offers":[{"title":"Default Title","offer_id":55715535094052,"sku":"MCX516A-CCAT","price":588.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/6223\/6708\/files\/100GbE-Dual-Port-Network-Card-Used.webp?v=1783604102"},{"product_id":"used-mellanox-connectx-6-mcx653105a-ecat-100gbe-hdr100-single-port-pcie-4-0-adapter","title":"Used Mellanox ConnectX-6 MCX653105A-ECAT 100GbE HDR100 Single-Port PCIe 4.0 Adapter","description":"\u003ch2\u003eNVIDIA Mellanox ConnectX-6\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNVIDIA Mellanox ConnectX-6\u003c\/strong\u003e is a 100\/200GbE + HDR InfiniBand network adapter by NVIDIA Mellanox, featuring PCIe 4.0 x16 host interface, RoCE v2, RDMA over IB HDR (200 Gbps) RDMA support, and NVMe-oF target\/initiator hardware offloads. With \u0026lt; 0.6 μs RDMA RDMA latency, it enables zero-CPU-copy data movement for HPC, AI\/ML, and storage workloads.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eCondition: Refurbished \/ Pre-owned — fully tested, cleaned, and verified. Ships with warranty coverage.\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;\"\u003e\\\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;width:35%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\\\n\u003ctbody\u003e\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnectX-6\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeeds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100\/200GbE + HDR InfiniBand\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLane Config\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1×200G QSFP56 \/ 2×100G QSFP28; HDR 200Gb\/s\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePcie\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCIe 4.0 x16\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRdma\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoCE v2, RDMA over IB HDR (200 Gbps)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEthernet, InfiniBand HDR (VPI dual-mode)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOffloads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNVMe-oF target\/initiator, VXLAN, SR-IOV, GPUDirect RDMA, Hardware Crypto (IPsec\/MACsec\/TLS), Advanced Switching\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.6 μs RDMA\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 40W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is the ConnectX-6 adapter?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eThe Mellanox ConnectX-6 is a 200GbE\/HDR InfiniBand VPI adapter with PCIe 4.0, hardware crypto offloads (IPsec\/MACsec\/TLS), and GPUDirect RDMA—designed for next-gen AI supercomputers and 200G storage fabrics.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eDoes ConnectX-6 support hardware encryption?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eYes. ConnectX-6 includes inline IPsec, MACsec, and TLS hardware crypto engines that offload encryption from the CPU at full line rate.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat PCIe does ConnectX-6 require?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003ePCIe 4.0 x16 for 200G line-rate. It also works in PCIe 3.0 x16 slots at reduced throughput (100G line-rate).\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eHow does ConnectX-6 compare to ConnectX-7?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eConnectX-7 adds 400GbE, PCIe 5.0, and data-path acceleration for DPU offload. ConnectX-6 remains the best value for 200GbE\/HDR deployments.\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003e\u003cem\u003eAvailable at \u003ca href=\"https:\/\/zhongxindata.hk\"\u003eZhongxin Data\u003c\/a\u003e — enterprise network hardware specialists. Worldwide shipping from Hong Kong.\u003c\/em\u003e\u003c\/p\u003e","brand":"NVIDIA Mellanox","offers":[{"title":"Default Title","offer_id":55715535225124,"sku":"MCX653105A-ECAT","price":876.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/6223\/6708\/files\/100GbE-InfiniBand-HDR100-Single-Port-Network.webp?v=1783604120"},{"product_id":"mellanox-mcx4421a-acan-25gbe-adapter","title":"NVIDIA Mellanox ConnectX-4 Lx MCX4421A-ACAN 25GbE Dual-Port Network Adapter","description":"\u003ch2\u003eNVIDIA Mellanox ConnectX-4 Lx\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNVIDIA Mellanox ConnectX-4 Lx\u003c\/strong\u003e is a 10\/25\/40GbE network adapter by NVIDIA Mellanox, featuring PCIe 3.0 x8 host interface, RoCE v2 RDMA support, and VXLAN hardware offloads. With \u0026lt; 1.5 μs RDMA RDMA latency, it enables zero-CPU-copy data movement for HPC, AI\/ML, and storage workloads.\u003c\/p\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;\"\u003e\\\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;width:35%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\\\n\u003ctbody\u003e\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnectX-4 Lx\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeeds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\/25\/40GbE\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLane Config\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1×40G QSFP+ \/ 2×10G SFP+ \/ 1×25G SFP28 \/ 2×25G SFP28\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePcie\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCIe 3.0 x8\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRdma\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoCE v2\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEthernet only (no IB)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOffloads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVXLAN, SR-IOV, NVMe-oF initiator\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1.5 μs RDMA\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 15W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is the ConnectX-4 Lx adapter?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eThe ConnectX-4 Lx is a cost-effective 10\/25\/40GbE Ethernet adapter with RoCE v2 RDMA support—targeted at cloud, telecom, and storage applications that don't require 100GbE.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eDoes ConnectX-4 Lx support InfiniBand?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eNo. The Lx variant is Ethernet-only. For dual Ethernet+InfiniBand, use ConnectX-4 (non-Lx) or ConnectX-5\/6.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat's the difference between ConnectX-4 and ConnectX-4 Lx?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eConnectX-4 supports 100GbE + EDR IB with full RoCE v1\/v2, while the Lx variant supports up to 40GbE Ethernet-only with RoCE v2 and fewer offloads—at roughly half the cost.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eCan ConnectX-4 Lx be used for NVMe-oF?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eYes, as NVMe-oF initiator (host side). Target mode is available on ConnectX-4 and ConnectX-5 only.\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003e\u003cem\u003eAvailable at \u003ca href=\"https:\/\/zhongxindata.hk\"\u003eZhongxin Data\u003c\/a\u003e — enterprise network hardware specialists. Worldwide shipping from Hong Kong.\u003c\/em\u003e\u003c\/p\u003e","brand":"NVIDIA Mellanox","offers":[{"title":"Default Title","offer_id":55722806214948,"sku":"MCX4421A-ACAN","price":280.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/6223\/6708\/files\/4421-acan_300____20220315190326.jpg?v=1783736300"},{"product_id":"mellanox-mcx4131a-gcat-40gbe-adapter","title":"NVIDIA Mellanox ConnectX-4 Lx MCX4131A-GCAT 40GbE Single-Port Network Adapter","description":"\u003ch2\u003eNVIDIA Mellanox ConnectX-4 Lx MCX4131A-GCAT 40GbE Single-Port Network Adapter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNVIDIA ConnectX-4 Lx EN MCX4131A-GCAT\u003c\/strong\u003e is a cost-effective 40GbE single-port QSFP28 network adapter built on a PCIe 3.0 x8 interface. It supports 1\/10\/25\/40 Gb\/s Ethernet speeds, making it an ideal, power-efficient upgrade for existing enterprise server and storage infrastructure without replacing the entire network stack.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePort: 1 x QSFP28 (40GbE)\u003c\/li\u003e\n\u003cli\u003eInterface: PCIe 3.0 x8\u003c\/li\u003e\n\u003cli\u003eSpeed: 1\/10\/25\/40 Gb\/s Ethernet\u003c\/li\u003e\n\u003cli\u003eSeries: ConnectX-4 Lx (entry-level, low power)\u003c\/li\u003e\n\u003cli\u003eRDMA over Converged Ethernet (RoCE) for low-latency workloads\u003c\/li\u003e\n\u003cli\u003eSR-IOV support for virtualization and cloud environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eWorks with Linux (RHEL, Ubuntu, Debian, CentOS), VMware ESXi and Windows Server using NVIDIA MLNX_OFED drivers.\u003c\/p\u003e\n\u003ch3\u003eCondition \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eCondition: Used - fully tested and verified working before shipping. Quality-tested with warranty; all units are cleaned and re-tested.\u003c\/p\u003e\n\u003cp\u003eThis is a B2B quote-based store: prices vary with market conditions. \u003ca href=\"\/pages\/contact\"\u003eContact us for a quote\u003c\/a\u003e with your quantity and target price - retail and wholesale welcome.\u003c\/p\u003e","brand":"NVIDIA Mellanox","offers":[{"title":"Default Title","offer_id":55722870210852,"sku":"MCX4131A-GCAT","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/6223\/6708\/files\/MCX4131A-GCAT___20240607194440.png?v=1783736420"},{"product_id":"mellanox-mcx4621a-acab-100gbe-adapter","title":"NVIDIA Mellanox ConnectX-4 EN MCX4621A-ACAB 100GbE Single-Port Network Adapter","description":"\u003ch2\u003eNVIDIA Mellanox ConnectX-4 MCX4621A-ACAB 100GbE Single-Port Network Adapter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNVIDIA ConnectX-4 EN MCX4621A-ACAB\u003c\/strong\u003e is a high-performance 100GbE single-port QSFP28 network adapter built on a PCIe 3.0 x16 interface. It supports 10\/25\/40\/50\/100 Gb\/s Ethernet, designed for enterprise data center and cloud computing environments that demand maximum bandwidth and low latency.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePort: 1 x QSFP28 (100GbE)\u003c\/li\u003e\n\u003cli\u003eInterface: PCIe 3.0 x16\u003c\/li\u003e\n\u003cli\u003eSpeed: 10\/25\/40\/50\/100 Gb\/s Ethernet\u003c\/li\u003e\n\u003cli\u003eSeries: ConnectX-4 EN\u003c\/li\u003e\n\u003cli\u003eRDMA over Converged Ethernet (RoCE) and InfiniBand-style low-latency fabric support\u003c\/li\u003e\n\u003cli\u003eSR-IOV, overlay networks (VXLAN\/NVGRE) offload\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eWorks with Linux (RHEL, Ubuntu, Debian, CentOS), VMware ESXi and Windows Server using NVIDIA MLNX_OFED drivers.\u003c\/p\u003e\n\u003ch3\u003eCondition \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eCondition: Used - fully tested and verified working before shipping. Quality-tested with warranty; all units are cleaned and re-tested.\u003c\/p\u003e\n\u003cp\u003eThis is a B2B quote-based store: prices vary with market conditions. \u003ca href=\"\/pages\/contact\"\u003eContact us for a quote\u003c\/a\u003e with your quantity and target price - retail and wholesale welcome.\u003c\/p\u003e","brand":"NVIDIA Mellanox","offers":[{"title":"Default Title","offer_id":55722931126564,"sku":"MCX4621A-ACAB","price":575.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/6223\/6708\/files\/MCX4621A-ACAB_450.jpg?v=1783736485"},{"product_id":"mellanox-mcx653105a-hdat-hdr-adapter","title":"NVIDIA Mellanox ConnectX-6 MCX653105A-HDAT 200Gb\/s HDR InfiniBand Single-Port Adapter","description":"\u003ch2\u003eNVIDIA Mellanox ConnectX-6\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNVIDIA Mellanox ConnectX-6\u003c\/strong\u003e is a 100\/200GbE + HDR InfiniBand network adapter by NVIDIA Mellanox, featuring PCIe 4.0 x16 host interface, RoCE v2, RDMA over IB HDR (200 Gbps) RDMA support, and NVMe-oF target\/initiator hardware offloads. With \u0026lt; 0.6 μs RDMA RDMA latency, it enables zero-CPU-copy data movement for HPC, AI\/ML, and storage workloads.\u003c\/p\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;\"\u003e\\\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;width:35%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\\\n\u003ctbody\u003e\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnectX-6\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeeds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100\/200GbE + HDR InfiniBand\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLane Config\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1×200G QSFP56 \/ 2×100G QSFP28; HDR 200Gb\/s\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePcie\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCIe 4.0 x16\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRdma\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoCE v2, RDMA over IB HDR (200 Gbps)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEthernet, InfiniBand HDR (VPI dual-mode)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOffloads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNVMe-oF target\/initiator, VXLAN, SR-IOV, GPUDirect RDMA, Hardware Crypto (IPsec\/MACsec\/TLS), Advanced Switching\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.6 μs RDMA\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 40W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is the ConnectX-6 adapter?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eThe Mellanox ConnectX-6 is a 200GbE\/HDR InfiniBand VPI adapter with PCIe 4.0, hardware crypto offloads (IPsec\/MACsec\/TLS), and GPUDirect RDMA—designed for next-gen AI supercomputers and 200G storage fabrics.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eDoes ConnectX-6 support hardware encryption?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eYes. ConnectX-6 includes inline IPsec, MACsec, and TLS hardware crypto engines that offload encryption from the CPU at full line rate.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat PCIe does ConnectX-6 require?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003ePCIe 4.0 x16 for 200G line-rate. It also works in PCIe 3.0 x16 slots at reduced throughput (100G line-rate).\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eHow does ConnectX-6 compare to ConnectX-7?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eConnectX-7 adds 400GbE, PCIe 5.0, and data-path acceleration for DPU offload. ConnectX-6 remains the best value for 200GbE\/HDR deployments.\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003e\u003cem\u003eAvailable at \u003ca href=\"https:\/\/zhongxindata.hk\"\u003eZhongxin Data\u003c\/a\u003e — enterprise network hardware specialists. Worldwide shipping from Hong Kong.\u003c\/em\u003e\u003c\/p\u003e","brand":"NVIDIA Mellanox","offers":[{"title":"Default Title","offer_id":55723051712804,"sku":"MCX653105A-HDAT","price":876.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/6223\/6708\/files\/MCX653105A-HDAT_MCX653105A-HDAT.jpg?v=1783736595"},{"product_id":"server-network-interface-card-connectx-5-ex-mcx516a-cdat-100","title":"Server Network Interface Card ConnectX-5 Ex MCX516A-CDAT 100GbE Dual Port QSFP28 PCIe4.0 X16 Data Center Network Adapter","description":"\u003ch2\u003eNVIDIA Mellanox ConnectX-5\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNVIDIA Mellanox ConnectX-5\u003c\/strong\u003e is a 10\/25\/40\/50\/100GbE + EDR\/HDR100 InfiniBand network adapter by NVIDIA Mellanox, featuring PCIe 3.0 x16 host interface, RoCE v1 \u0026amp; v2, RDMA over IB (EDR 100G \/ HDR100 100G) RDMA support, and NVMe-oF target\/initiator hardware offloads. With \u0026lt; 0.8 μs RDMA RDMA latency, it enables zero-CPU-copy data movement for HPC, AI\/ML, and storage workloads.\u003c\/p\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;\"\u003e\\\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;width:35%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\\\n\u003ctbody\u003e\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnectX-5\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeeds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\/25\/40\/50\/100GbE + EDR\/HDR100 InfiniBand\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLane Config\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1×100G \/ 2×50G \/ 4×25G (QSFP28); 1×25G (SFP28); 1×100GbE HDR (QSFP28)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePcie\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCIe 3.0 x16\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRdma\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoCE v1 \u0026amp; v2, RDMA over IB (EDR 100G \/ HDR100 100G)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEthernet, InfiniBand EDR\/HDR100 (VPI dual-mode)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOffloads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNVMe-oF target\/initiator, VXLAN, SR-IOV, GPUDirect RDMA, GPUDirect Async, Advanced Switching\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.8 μs RDMA\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 30W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is the ConnectX-5 adapter?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eThe Mellanox ConnectX-5 is a dual-mode 100GbE\/InfiniBand VPI adapter with RoCE v2 and IB RDMA, NVMe-oF, and GPUDirect RDMA—the most versatile adapter for mixed Ethernet+IB datacenter deployments.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eDoes ConnectX-5 support both Ethernet and InfiniBand?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eYes. ConnectX-5 VPI adapters can operate in Ethernet or InfiniBand mode (EDR 100G or HDR100 100G) per-port, enabling flexible deployment in mixed environments.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is GPUDirect RDMA on ConnectX-5?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eGPUDirect RDMA allows NVIDIA GPUs to read\/write network data directly without CPU involvement, reducing latency to \u0026lt;0.8 μs and enabling peer-to-peer GPU communication for AI training.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eHow does ConnectX-5 compare to ConnectX-6?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eConnectX-6 adds 200GbE HDR InfiniBand, PCIe 4.0 x16, and advanced crypto\/security offloads. ConnectX-5 is ideal for 100GbE deployments; ConnectX-6 for 200G\/HDR interconnects.\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003e\u003cem\u003eAvailable at \u003ca href=\"https:\/\/zhongxindata.hk\"\u003eZhongxin Data\u003c\/a\u003e — enterprise network hardware specialists. Worldwide shipping from Hong Kong.\u003c\/em\u003e\u003c\/p\u003e","brand":"NVIDIA Mellanox","offers":[{"title":"Default Title","offer_id":55807003525412,"sku":"ALI-1601803593676","price":588.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/6223\/6708\/files\/connectx-5-ex.webp?v=1784863565"},{"product_id":"server-network-interface-card-connectx-5-mcx512a-acut-25gbe","title":"Server Network Interface Card ConnectX-5 MCX512A-ACUT 25GbE Dual Port SFP28 PCIe3.0 X8 Data Center Network Adapter","description":"\u003ch2\u003eNVIDIA Mellanox ConnectX-5\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNVIDIA Mellanox ConnectX-5\u003c\/strong\u003e is a 10\/25\/40\/50\/100GbE + EDR\/HDR100 InfiniBand network adapter by NVIDIA Mellanox, featuring PCIe 3.0 x16 host interface, RoCE v1 \u0026amp; v2, RDMA over IB (EDR 100G \/ HDR100 100G) RDMA support, and NVMe-oF target\/initiator hardware offloads. With \u0026lt; 0.8 μs RDMA RDMA latency, it enables zero-CPU-copy data movement for HPC, AI\/ML, and storage workloads.\u003c\/p\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;\"\u003e\\\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;width:35%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\\\n\u003ctbody\u003e\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnectX-5\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeeds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\/25\/40\/50\/100GbE + EDR\/HDR100 InfiniBand\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLane Config\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1×100G \/ 2×50G \/ 4×25G (QSFP28); 1×25G (SFP28); 1×100GbE HDR (QSFP28)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePcie\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCIe 3.0 x16\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRdma\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoCE v1 \u0026amp; v2, RDMA over IB (EDR 100G \/ HDR100 100G)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEthernet, InfiniBand EDR\/HDR100 (VPI dual-mode)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOffloads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNVMe-oF target\/initiator, VXLAN, SR-IOV, GPUDirect RDMA, GPUDirect Async, Advanced Switching\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.8 μs RDMA\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 30W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is the ConnectX-5 adapter?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eThe Mellanox ConnectX-5 is a dual-mode 100GbE\/InfiniBand VPI adapter with RoCE v2 and IB RDMA, NVMe-oF, and GPUDirect RDMA—the most versatile adapter for mixed Ethernet+IB datacenter deployments.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eDoes ConnectX-5 support both Ethernet and InfiniBand?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eYes. ConnectX-5 VPI adapters can operate in Ethernet or InfiniBand mode (EDR 100G or HDR100 100G) per-port, enabling flexible deployment in mixed environments.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is GPUDirect RDMA on ConnectX-5?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eGPUDirect RDMA allows NVIDIA GPUs to read\/write network data directly without CPU involvement, reducing latency to \u0026lt;0.8 μs and enabling peer-to-peer GPU communication for AI training.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eHow does ConnectX-5 compare to ConnectX-6?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eConnectX-6 adds 200GbE HDR InfiniBand, PCIe 4.0 x16, and advanced crypto\/security offloads. ConnectX-5 is ideal for 100GbE deployments; ConnectX-6 for 200G\/HDR interconnects.\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003e\u003cem\u003eAvailable at \u003ca href=\"https:\/\/zhongxindata.hk\"\u003eZhongxin Data\u003c\/a\u003e — enterprise network hardware specialists. Worldwide shipping from Hong Kong.\u003c\/em\u003e\u003c\/p\u003e","brand":"NVIDIA Mellanox","offers":[{"title":"Default Title","offer_id":55807004246308,"sku":"ALI-1601804084101","price":280.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/6223\/6708\/files\/connectx-5-mcx512a.webp?v=1784863578"},{"product_id":"100gbe-dual-port-network-card-used-for-mellanox-connectx-5-m","title":"100GbE Dual-Port Network Card Used for Mellanox ConnectX-5 MCX516A-CDAT PCIe 4.0 x16 NIC","description":"\u003ch2\u003eNVIDIA Mellanox ConnectX-5\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNVIDIA Mellanox ConnectX-5\u003c\/strong\u003e is a 10\/25\/40\/50\/100GbE + EDR\/HDR100 InfiniBand network adapter by NVIDIA Mellanox, featuring PCIe 3.0 x16 host interface, RoCE v1 \u0026amp; v2, RDMA over IB (EDR 100G \/ HDR100 100G) RDMA support, and NVMe-oF target\/initiator hardware offloads. With \u0026lt; 0.8 μs RDMA RDMA latency, it enables zero-CPU-copy data movement for HPC, AI\/ML, and storage workloads.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eCondition: Refurbished \/ Pre-owned — fully tested, cleaned, and verified. Ships with warranty coverage.\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;\"\u003e\\\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;width:35%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\\\n\u003ctbody\u003e\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnectX-5\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeeds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\/25\/40\/50\/100GbE + EDR\/HDR100 InfiniBand\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLane Config\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1×100G \/ 2×50G \/ 4×25G (QSFP28); 1×25G (SFP28); 1×100GbE HDR (QSFP28)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePcie\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCIe 3.0 x16\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRdma\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoCE v1 \u0026amp; v2, RDMA over IB (EDR 100G \/ HDR100 100G)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEthernet, InfiniBand EDR\/HDR100 (VPI dual-mode)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOffloads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNVMe-oF target\/initiator, VXLAN, SR-IOV, GPUDirect RDMA, GPUDirect Async, Advanced Switching\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.8 μs RDMA\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 30W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is the ConnectX-5 adapter?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eThe Mellanox ConnectX-5 is a dual-mode 100GbE\/InfiniBand VPI adapter with RoCE v2 and IB RDMA, NVMe-oF, and GPUDirect RDMA—the most versatile adapter for mixed Ethernet+IB datacenter deployments.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eDoes ConnectX-5 support both Ethernet and InfiniBand?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eYes. ConnectX-5 VPI adapters can operate in Ethernet or InfiniBand mode (EDR 100G or HDR100 100G) per-port, enabling flexible deployment in mixed environments.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is GPUDirect RDMA on ConnectX-5?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eGPUDirect RDMA allows NVIDIA GPUs to read\/write network data directly without CPU involvement, reducing latency to \u0026lt;0.8 μs and enabling peer-to-peer GPU communication for AI training.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eHow does ConnectX-5 compare to ConnectX-6?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eConnectX-6 adds 200GbE HDR InfiniBand, PCIe 4.0 x16, and advanced crypto\/security offloads. ConnectX-5 is ideal for 100GbE deployments; ConnectX-6 for 200G\/HDR interconnects.\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003e\u003cem\u003eAvailable at \u003ca href=\"https:\/\/zhongxindata.hk\"\u003eZhongxin Data\u003c\/a\u003e — enterprise network hardware specialists. Worldwide shipping from Hong Kong.\u003c\/em\u003e\u003c\/p\u003e","brand":"NVIDIA Mellanox","offers":[{"title":"Default Title","offer_id":55807042847012,"sku":"ALI-1601787366201","price":603.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/6223\/6708\/files\/100GbE-Dual-Port-Network-Card-Used_1e9cc418-3d8a-4495-8bb1-744bc76d96de.webp?v=1784864310"},{"product_id":"100gbe-dual-port-network-card-used-for-mellanox-cx5-mcx516a-ccat-pcie-3-0-x16-nic-1","title":"Server Network Interface Card ConnectX-5 MCX516A-CCAT 100GbE Dual Port QSFP28 PCIe 3.0 x16 Used","description":"\u003ch2\u003eNVIDIA Mellanox ConnectX-5\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNVIDIA Mellanox ConnectX-5\u003c\/strong\u003e is a 10\/25\/40\/50\/100GbE + EDR\/HDR100 InfiniBand network adapter by NVIDIA Mellanox, featuring PCIe 3.0 x16 host interface, RoCE v1 \u0026amp; v2, RDMA over IB (EDR 100G \/ HDR100 100G) RDMA support, and NVMe-oF target\/initiator hardware offloads. With \u0026lt; 0.8 μs RDMA RDMA latency, it enables zero-CPU-copy data movement for HPC, AI\/ML, and storage workloads.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eCondition: Refurbished \/ Pre-owned — fully tested, cleaned, and verified. Ships with warranty coverage.\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;\"\u003e\\\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;width:35%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\\\n\u003ctbody\u003e\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnectX-5\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpeeds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\/25\/40\/50\/100GbE + EDR\/HDR100 InfiniBand\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLane Config\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1×100G \/ 2×50G \/ 4×25G (QSFP28); 1×25G (SFP28); 1×100GbE HDR (QSFP28)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePcie\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCIe 3.0 x16\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRdma\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoCE v1 \u0026amp; v2, RDMA over IB (EDR 100G \/ HDR100 100G)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEthernet, InfiniBand EDR\/HDR100 (VPI dual-mode)\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOffloads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNVMe-oF target\/initiator, VXLAN, SR-IOV, GPUDirect RDMA, GPUDirect Async, Advanced Switching\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.8 μs RDMA\u003c\/td\u003e\n\u003c\/tr\u003e\\\\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 30W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is the ConnectX-5 adapter?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eThe Mellanox ConnectX-5 is a dual-mode 100GbE\/InfiniBand VPI adapter with RoCE v2 and IB RDMA, NVMe-oF, and GPUDirect RDMA—the most versatile adapter for mixed Ethernet+IB datacenter deployments.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eDoes ConnectX-5 support both Ethernet and InfiniBand?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eYes. ConnectX-5 VPI adapters can operate in Ethernet or InfiniBand mode (EDR 100G or HDR100 100G) per-port, enabling flexible deployment in mixed environments.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat is GPUDirect RDMA on ConnectX-5?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eGPUDirect RDMA allows NVIDIA GPUs to read\/write network data directly without CPU involvement, reducing latency to \u0026lt;0.8 μs and enabling peer-to-peer GPU communication for AI training.\u003c\/p\u003e\u003c\/details\u003e\\\\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eHow does ConnectX-5 compare to ConnectX-6?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eConnectX-6 adds 200GbE HDR InfiniBand, PCIe 4.0 x16, and advanced crypto\/security offloads. ConnectX-5 is ideal for 100GbE deployments; ConnectX-6 for 200G\/HDR interconnects.\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003e\u003cem\u003eAvailable at \u003ca href=\"https:\/\/zhongxindata.hk\"\u003eZhongxin Data\u003c\/a\u003e — enterprise network hardware specialists. Worldwide shipping from Hong Kong.\u003c\/em\u003e\u003c\/p\u003e","brand":"NVIDIA Mellanox","offers":[{"title":"Default Title","offer_id":55807051825444,"sku":"MCX516A-CCAT","price":588.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/6223\/6708\/files\/100GbE-Dual-Port-Network-Card-Used_165be68d-fe6f-44b4-91e3-e576128ddfc4.webp?v=1784865042"}],"url":"https:\/\/zhongxindata.hk\/collections\/mellanox-network-adapters.oembed","provider":"Zhongxin Data","version":"1.0","type":"link"}