NVIDIA Mellanox MCP1650-V002E26 200Gb/s QSFP56 Passive Copper Cable, 2m, 26 AWG, LSZH: This is a 2-meter passive copper direct attach cable (DAC) for 200Gb/s connectivity over QSFP56. The MCP1650-V002E26 is the 26 AWG construction variant of the MCP1650-V series. It is a passive twinax assembly — no power draw, no embedded retimers, and no active electronics. NVIDIA P/N: 980-9I54D-00V002. This is a refurbished unit.
Engineering Context
The MCP1650-V002E26 carries 4 lanes of 50Gb/s PAM4 signaling over twinax copper. At 2m length the 26 AWG conductor cross-section is matched to the QSFP56 passive copper reach budget. Passive construction means zero power draw, zero added electrical latency, and no firmware-revision compatibility surface compared to AOCs or active DACs. The LSZH outer jacket complies with data center fire-safety codes. The black pulltab marks the standard MCP1650-V series variant.
Deployment & Use Cases
In-rack and intra-row 200Gb/s connections between leaf and Top-of-Rack switches. ConnectX-6 and ConnectX-6 Dx 200Gb/s adapter uplinks. Spine-leaf links in Quantum HDR clusters. AI/ML training cluster GPU node interconnects up to 2m. Storage backend connections in NVMe-oF over 200GbE deployments.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCP1650-V002E26
NVIDIA P/N: 980-9I54D-00V002
Form Factor: QSFP56 to QSFP56
Data Rate: 200Gb/s (4x 50Gb/s PAM4)
Cable Type: Passive Direct Attach Copper (DAC)
Length: 2m
Conductor Gauge: 26 AWG
Jacket: LSZH (Low Smoke Zero Halogen)
Pulltab: Black
Power: Passive (no power required)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Quantum HDR switches (QM8700, QM8790), Spectrum-2 200GbE switches such as the SN3700, and ConnectX-6 / ConnectX-6 Dx VPI adapters configured for 200GbE or HDR InfiniBand. Requires QSFP56 ports — will not link up in QSFP28 (100G) ports. Not compatible with 400G QSFP-DD interfaces. Length is fixed at 2m. As a passive cable, it is not suitable for runs that exceed the QSFP56 passive copper reach budget; for longer reach use an MFS-series AOC instead.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS verifies continuity, lane integrity, and connector retention on every passive DAC before shipment. We offer expert consultation on Quantum HDR and Spectrum-2 fabric design and 1–3 day handling on stock items. Visit tes-itsolutions.com for full inventory.