NVIDIA Mellanox MC2206125-008 QSFP+ 40Gb/s VPI Passive Copper Cable, 8m (Refurbished): A single passive copper Direct Attach Cable (DAC) with QSFP+ connectors on both ends, 8 meters in length. The MC2206125-008 is a 1:1 point-to-point QSFP+ to QSFP+ interconnect engineered for InfiniBand QDR (40 Gb/s) and 10/40 Gigabit Ethernet links. This is not an Active Optical Cable (AOC), not a transceiver, and not a 4xSFP+ breakout cable. Condition: refurbished, visually inspected, and tested for continuity and link integrity.
Engineering Context: The MC2206125-008 is part of Mellanox's MC22 passive copper QSFP+ family. Sustained aggregate link rate is 40 Gb/s (4 lanes × 10 Gb/s NRZ), corresponding to InfiniBand QDR or 40 Gigabit Ethernet. The cable is fully passive (0 W power draw at the host) and contains no signal-conditioning electronics, retimers, or optics. Because passive copper relies on the host SerDes to drive the link, supported reach is bounded by the QSFP+ port's output specification.
Deployment & Use Cases: Common deployments include rack-internal HPC fabric links between Mellanox InfiniScale IV (IS5000-series) QDR switches and ConnectX-2 / ConnectX-3 VPI HCAs; storage-cluster interconnects between QSFP+-equipped JBOFs and QDR/40GbE servers; and short-reach top-of-rack to compute-node Ethernet uplinks. The 8-meter length suits in-rack and adjacent-rack runs where AOCs or fiber are not required.
Technical Specifications:
Manufacturer Part Number: MC2206125-008
OEM: NVIDIA Mellanox
Form Factor: QSFP+ to QSFP+ (4-channel)
Cable Type: Passive Copper Direct Attach Cable (DAC)
Length: 8 meters
Maximum Data Rate: 40 Gb/s aggregate (4 × 10 Gb/s NRZ)
Protocol Support: InfiniBand QDR (40 Gb/s), 10/40 Gigabit Ethernet (VPI)
Power Draw: 0 W (fully passive)
Quantity: 1 cable per listing
Condition: Refurbished, tested
Compatibility & Constraints: Designed to interoperate with Mellanox QSFP+ host channel adapters and switches that accept passive QDR / 40GbE DACs (ConnectX-2 / ConnectX-3 VPI, IS5000-series, SwitchX). It will not negotiate FDR (56 Gb/s), FDR10 above the QDR ceiling, or EDR (100 Gb/s) — those rates require FDR/EDR-rated copper or AOCs. It is not an active cable and contains no on-cable electronics, so it cannot break out to four discrete SFP+ ports. Note: the prior listing title indicated “NEW”, but the SKU on this listing reflects refurbished stock — please confirm condition expectations before purchase. Verify the host platform's QSFP+ vendor-compatibility policy before deployment.
Why TES: T.E.S IT-SOLUTIONS sources, tests, and resells refurbished NVIDIA Mellanox enterprise networking hardware for B2B buyers. Each unit ships from EU stock with 1–3 business day handling. View this product on tes-itsolutions.com.