Mellanox SB7700-ES2F EDR 100Gb/s InfiniBand Switch 36-Port Used
Quick answer: Mellanox SB7700 (Switch-IB) MSB7700-ES2F used, bench-tested. Mellanox SB7700 EDR InfiniBand switch: 36 QSFP28 ports at 100Gb/s, 7.2 Tb/s, ~90 ns port-to-port, 1U, P2C airflow. This is an InfiniBand switch, not an Ethernet switch.
In stock: MSB7700-ES2F is in stock — availability is confirmed per part number, so send the exact model you need and we check the shelf before quoting.
Need a quote? Message WhatsApp +86 13068616914 with the part number (for example MSB7700-ES2F) and the quantity — we reply with price, condition notes and photos of the actual unit. No price is listed here because every order is quoted per part number.
Mellanox SB7700 (Switch-IB)
The Mellanox SB7700 (MSB7700-ES2F) is a 1U EDR InfiniBand switch built on the Switch-IB device: 36 QSFP28 ports at 100Gb/s each, 7.2 Tb/s of non-blocking bandwidth and about 90 ns port-to-port latency. It is the switch people still ask for when an EDR estate needs another leaf or a small standalone fabric, and it negotiates down to FDR and QDR links.
Condition: Used — cleaned, re-flashed and bench-tested on our own test line before it is listed. 90-day warranty from delivery.
| Specification | Details |
|---|---|
| Part number | MSB7700-ES2F |
| Family | Mellanox SB7700 (Switch-IB) |
| Switch silicon | Mellanox Switch-IB (EDR InfiniBand) |
| Ports | 36 × QSFP28 100Gb/s EDR |
| Port speed | 100Gb/s EDR per port |
| Connectors | QSFP28 (36 ports) |
| Switching capacity | 7.2 Tb/s non-blocking |
| Latency | ~90 ns port-to-port |
| Airflow | P2C — power-to-connector (front-to-back) |
| Form factor | 1U rackmount, standard depth |
| Power | 2 × hot-swap AC PSU (1+1), N+1 hot-swap fans |
| Management | x86 dual-core control plane with subnet manager |
| Software | MLNX-OS / InfiniBand fabric software |
Key features
- 36 × QSFP28 EDR 100Gb/s ports
- 7.2 Tb/s non-blocking switching capacity
- ~90 ns port-to-port latency
- Dual hot-swap AC power supplies (1+1)
- N+1 hot-swap fan units, P2C airflow
- Negotiates to FDR 56G and QDR 40G links
- Ships with a rail kit
Typical deployments
EDR leaf/spine fabrics, storage backbones for Lustre and GPFS, and small standalone InfiniBand clusters that pair with ConnectX-4/5 HCAs.
What is included
- Switch chassis with both power supplies
- Fan units (P2C)
- Rail kit
- Condition report and bench-test notes
Not included
- QSFP28 cables and transceivers
- Subnet manager host if you run OpenSM externally
MSB7700-ES2F in the lineup
This is one of the last widely deployed EDR platforms, so it is the pragmatic way to extend an existing EDR or mixed EDR/HDR fabric without re-cabling. If you are building a new fabric at 200G or 400G, the Quantum-2 QM9700/QM9790 is the better starting point.
How it compares with models we also stock
| Model | Fabric | Ports | Best for |
|---|---|---|---|
| MSB7700-ES2F | InfiniBand EDR 100G | 36 QSFP28 | EDR estates, mixed-generation fabrics |
| MQM9700-NS2F | InfiniBand NDR 400G | 64 (32 OSFP) | New 400G fabrics, up to ~2,000 nodes |
| MQM9790-NS2F | InfiniBand NDR 400G | 64 (32 OSFP) | Large UFM-driven 400G fabrics |
Why buy this switch from Zhongxin Data
- Bench-tested on our own in-house test line — ports, fans and power supplies are checked before the unit leaves.
- We quote only what we can physically confirm: the exact part number, airflow direction and condition notes come from the unit in front of us.
- Used enterprise switches at secondary-market pricing, with a 90-day warranty from delivery.
- Worldwide shipping from Hong Kong, China; consolidation with servers, NICs and optics from the same rack is routine.
Request a quote
Send the part number MSB7700-ES2F, the quantity you need and your destination to WhatsApp +86 13068616914 (or reply to any thread on zhongxindata.hk). We confirm availability against the exact model before quoting, and we can quote alternative airflow builds or port-count variants from the same family if they fit your rack better.
Frequently asked questions
Is the SB7700 an InfiniBand switch or an Ethernet switch?
InfiniBand. It runs native IB at EDR 100Gb/s per port. Its Ethernet counterparts are the Spectrum SN2000/SN3000 series, which use different part numbers.
What speed does each port run?
100Gb/s EDR. Links also negotiate down to FDR 56Gb/s and QDR 40Gb/s, so older HCAs still connect.
Does it include a subnet manager?
The ES2F build carries an x86 dual-core control plane; for multi-switch fabrics you can run the subnet manager on a host with OpenSM or use UFM.
What is the airflow direction on ES2F?
Power-to-connector (front-to-back). The reverse build is ES2R — keep one direction per rack row.
Which adapters match it?
ConnectX-4, ConnectX-5 and ConnectX-6 VPI cards in InfiniBand mode, with QSFP28 DAC or optical links.
Is this platform still supported by software?
It is an older EDR platform, so treat firmware and OS support as fixed rather than evolving. We test each unit on our own line and can tell you the firmware level we ship.
What warranty is included?
90-day warranty from delivery.
Available at Zhongxin Data — enterprise network hardware specialists. Worldwide shipping from Hong Kong, China.
Product image is a reference image for the form factor — revision, label and airflow sticker vary by batch. Ask us for photos of the actual unit before you commit.