NVIDIA Mellanox MC2207126-005 QSFP FDR 56Gb/s VPI Passive Copper Cable, 5m: This is a 5-meter passive copper QSFP-to-QSFP cable for VPI (Virtual Protocol Interconnect) operation, supporting both InfiniBand FDR (56 Gb/s) and Ethernet up to 56 GbE on Mellanox VPI hosts. The cable is a fixed-length integrated assembly with EEPROM-coded ends; it is not a transceiver pair with a removable patch cord. This listing is a lot of 3 NEW units in original packaging.
Engineering Context
The MC2207126-005 is built around 4 lanes of 14 Gb/s NRZ signaling, aggregating to 56 Gb/s per port. As a passive cable, it draws no port power and does not require an active component for signal conditioning at this length. On Mellanox VPI hosts (ConnectX-3 VPI, ConnectX-3 Pro VPI, SwitchX-2 VPI), the cable supports protocol-agnostic operation — the same physical cable carries InfiniBand FDR or 56GbE depending on port configuration. EEPROM data identifies the cable as a Mellanox-certified VPI assembly so the host configures lane training automatically.
Deployment & Use Cases
InfiniBand FDR HPC clusters with ConnectX-3 VPI HCAs and SX6000 series switches. RDMA-over-Ethernet (RoCE) fabrics at 40/56GbE on SwitchX-2 platforms. Storage networks running iSER or NVMe-oF over InfiniBand. GPU compute interconnects in mixed-protocol environments. Test and certification labs requiring a single cable for both IB and Ethernet validation.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MC2207126-005
Form Factor: QSFP to QSFP (Point-to-Point)
Data Rate: 56 Gb/s (4x14 Gb/s NRZ)
Cable Type: Passive Copper
Length: 5 m
Protocols: InfiniBand FDR, Ethernet up to 56GbE (VPI)
Conductor: Copper
Lot Quantity: 3 units
Condition: NEW — Original packaging
Compatibility & Hard Constraints
Compatible with NVIDIA Mellanox SX6000-series InfiniBand FDR switches, SwitchX-2 VPI switches, and ConnectX-3 VPI / ConnectX-3 Pro VPI adapters. Operates as InfiniBand FDR or Ethernet 40/56GbE depending on host port mode. Fixed 5 m length. Passive only — not an AOC and contains no active components. Not compatible with EDR (100 Gb/s) ports for full-rate operation; will train down to FDR. Not compatible with QSFP28 ports requiring 25 Gb/s per-lane signaling. Not compatible with SFP+ ports without a breakout (the cable is QSFP-to-QSFP only).
Why Choose T.E.S IT-SOLUTIONS
NEW units shipped in original Mellanox packaging. T.E.S IT-SOLUTIONS handles orders within 1–3 days and provides expert consultation on Mellanox VPI fabric cabling and protocol mode selection.