NVIDIA Mellanox MC2206126-006 Passive Copper Cable, IB QDR/Ethernet 40Gb/s, QSFP, 6m: This is a 6m passive direct-attach copper (DAC) cable for QSFP+ ports, supporting InfiniBand QDR (40Gb/s) or 40GbE Ethernet. The cable is fully passive and requires no power from host ports. This is NOT an active copper or AOC cable, and not a transceiver. This listing is for a Lot of 5 new units.
Engineering Context
The MC2206126-006 is a 6m passive QSFP-to-QSFP twinax assembly designed for short-reach intra-rack and adjacent-rack interconnects in HPC and data center fabrics. It uses copper twinax wire pairs with no active electronics, which keeps power draw at 0W per port. Latency is in the nanosecond range — significantly lower than any optical AOC. The connectors comply with the SFF-8436 QSFP+ mechanical specification.
Deployment & Use Cases
Top-of-Rack switch to server NIC connections in HPC clusters. InfiniBand QDR fabric links between Mellanox switches and ConnectX-2 / ConnectX-3 adapters. 40GbE Ethernet uplinks within or between adjacent racks. Storage fabric interconnects where short reach makes optical cabling unnecessary. GPU compute node interconnect at 40Gb/s on legacy Mellanox infrastructure.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MC2206126-006
Form Factor: QSFP+ to QSFP+ (SFF-8436)
Data Rate: Up to 40Gb/s (IB QDR or 40GbE Ethernet)
Cable Type: Passive Copper Direct Attach (DAC)
Length: 6m
Protocol: InfiniBand QDR / 40GbE Ethernet
Power Draw: 0W (passive, no electronics)
Conductor: Copper twinax
Lot Size: 5 units
Condition: New — Tested by T.E.S IT-SOLUTIONS
Compatibility & Constraints
Compatible with Mellanox IS5000 series QDR switches, SwitchX-2-based switches in QDR/40GbE mode. Compatible with ConnectX-2 and ConnectX-3 adapters in QDR or 40GbE Ethernet mode. NOT rated for FDR (56Gb/s), EDR (100Gb/s), or HDR (200Gb/s) operation. Fixed 6m length; passive copper cables cannot be extended or repaired. OEM-equivalent compatibility with third-party QSFP+ ports is not guaranteed; verify with your switch vendor compatibility list before deployment.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests every passive copper cable for continuity, signal integrity, and connector condition before shipment. We provide expert consultation on InfiniBand and Ethernet fabric cabling, global shipping, and 1–3 day handling. Visit tes-itsolutions.com for additional inventory and support.