NVIDIA Mellanox MCP7H00-G001 100GbE to 2x50GbE Passive Copper Hybrid Breakout Cable, QSFP28 to 2xQSFP28, 1m: This is a passive copper hybrid breakout direct attach cable (DAC) that splits a single QSFP28 100GbE port into two independent 50GbE QSFP28 lanes (2x2x25Gb/s NRZ). It is a fixed-length integrated assembly with permanently terminated connectors, not a transceiver pair with detachable patch cords. This is a Refurbished unit, tested by T.E.S IT-SOLUTIONS.
Engineering Context
The MCP7H00-G001 uses 30 AWG copper conductors and operates passively, drawing zero power. At 1 meter it is built for in-rack 100→2x50 split between a top-of-rack QSFP28 switch port and two dual-lane 50GbE endpoints. Splitting at the cable layer eliminates the cost and power of two separate 50GbE transceivers plus fiber. NVIDIA P/N reference: 980-9I61D-00C001.
Deployment & Use Cases
ToR-to-server fan-out where two 50GbE ConnectX-4 / ConnectX-5 EN dual-lane adapters share a single 100GbE switch port. High-density NVMe-oF or distributed storage racks where 50GbE is the preferred host rate. Lab and integration environments validating QSFP28 50GbE breakout configurations. Bridging a Spectrum 100GbE switch into adjacent racks running 2x50GbE compute at short reach.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCP7H00-G001
NVIDIA P/N: 980-9I61D-00C001
Form Factor: QSFP28 to 2x QSFP28 (hybrid breakout)
Cable Type: Passive Copper Direct Attach (DAC)
Aggregate Data Rate: 100GbE (2 lanes x 50Gb/s)
Per-Branch Rate: 50GbE (2x25Gb/s NRZ)
Length: 1m
Conductor Gauge: 30 AWG
Power Draw: Passive (zero)
Protocol: 100GbE Ethernet (breakout to 2x50GbE)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Spectrum switches (SN2000, SN3000 series) and ConnectX-4 / ConnectX-5 EN adapters operating in 50GbE 2-lane mode. The QSFP28 switch port must be explicitly configured for 2x50GbE breakout in the switch OS; ports left in 1x100GbE mode will not establish links across both branches. Not for InfiniBand fabrics — this is an Ethernet-only breakout. Not compatible with single-lane 50GbE PAM4 (50G-PAM4 SFP56) endpoints, which use a different signaling scheme. Fixed 1m length.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS verifies every refurbished breakout cable for connector contact, lane continuity, and labeling before shipment. We provide expert consultation on QSFP28 breakout configuration, global shipping, and a 1–3 day handling time. View this product on tes-itsolutions.com.