NVIDIA Mellanox MCP1650-V02AE26 200Gb/s HDR/200GbE QSFP56 Passive Copper Cable, 2.5m 26AWG LSZH: This is a 2.5-meter passive copper twinax cable for VPI 200Gb/s links supporting both InfiniBand HDR and 200GbE Ethernet between QSFP56 ports. The NVIDIA OEM part number is 980-9I54L-00V02A. The jacket is LSZH. This IS a passive zero-power DAC; this is NOT an active optical cable. This is a Refurbished unit.
Engineering Context
The MCP1650-V02AE26 carries 4 lanes at 50Gb/s PAM4 for 200Gb/s aggregate. At 2.5m and 26AWG, it sits in the longer end of passive copper reach for HDR/200GbE — typically the maximum practical passive distance before transitioning to active copper or AOC. Twinax copper provides the lowest latency (no SerDes/optics retiming) and zero power consumption per link. The LSZH jacket meets dense data hall fire-safety codes. PAM4 modulation requires RS-FEC at the link ends per IEEE 802.3bs / IBTA HDR specifications.
Deployment & Use Cases
HPC cluster intra-rack and adjacent-rack interconnects between Quantum HDR InfiniBand switches (QM8700/QM8790) and ConnectX-6 HDR adapters. AI/ML training pod east-west links within a 2.5m radius. Storage attachments from Spectrum-2 SN3000 200GbE switches to ConnectX-6 storage controllers. Low-latency financial trading and HFT fabrics in dense rack arrangements.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number (MPN): MCP1650-V02AE26
NVIDIA OEM P/N: 980-9I54L-00V02A
Form Factor: QSFP56 to QSFP56 (Point-to-Point)
Data Rate: 200Gb/s (4x 50Gb/s PAM4)
Protocols: InfiniBand HDR & 200GbE Ethernet (VPI)
Cable Type: Passive Direct Attach Copper (DAC), Twinax
Length: 2.5m
Conductor Gauge: 26 AWG
Jacket: LSZH (Low Smoke Zero Halogen)
Power: Passive (0W)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Quantum HDR InfiniBand switches (QM8700, QM8790) and Spectrum-2 SN3000 series 200GbE switches. Compatible with ConnectX-6 HDR/200GbE adapters in QSFP56 ports. Requires RS-FEC negotiation per HDR / 802.3bs at both ends. Not compatible with QSFP28 100Gb/s ports without breakout — and this cable does not break out. Not compatible with QSFP-DD 400Gb/s ports. Fixed 2.5m length; passive copper limits cable to short-to-medium intra-rack reach.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS validates every HDR DAC for connector seating, lane continuity, and FEC alignment before shipment. Visit tes-itsolutions.com for 1–3 business day handling, global shipping, and HDR/200GbE deployment consultation.