NVIDIA Mellanox MCP7H00-G003 100GbE QSFP28 to 2×50GbE Passive Copper Hybrid Cable, 3m — Lot of 4 (Refurbished): This is a 3-meter passive copper hybrid splitter cable that breaks one 100GbE QSFP28 port into two 50GbE QSFP28 connections. It is a fixed-length passive direct attach copper (DAC) assembly with 26 AWG conductors, not an active optical cable, transceiver, or breakout to SFP28. This listing is for a multipack of 4 refurbished units.
Engineering Context
The MCP7H00-G003 carries 100Gb/s aggregate over four 25Gb/s NRZ lanes split across two 50GbE legs (2×25G per leg). Passive copper assemblies require no power, contribute zero latency from active electronics, and avoid the optical budget concerns of AOCs. The 26 AWG conductor gauge keeps the cable supple in dense rack environments while remaining within the passive copper insertion-loss budget for 3 meters. Because there are no active components, the cable supports immediate link-up without firmware or transceiver compatibility checks at the optical layer.
Deployment & Use Cases
Top-of-Rack 100GbE switch port aggregation to two 50GbE servers or storage nodes. Density doubling on Spectrum SN2000 / SN2700 series ports without occupying additional switch ports. ConnectX-4 and ConnectX-5 dual-50GbE host connections from a single uplink. Short-reach intra-rack and adjacent-rack splits where passive copper reach is sufficient.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCP7H00-G003
Form Factor: QSFP28 to 2× QSFP28 (Hybrid Splitter)
Cable Type: Passive Copper Hybrid (DAC)
Data Rate: 100GbE → 2× 50GbE (4× 25Gb/s NRZ)
Length: 3 meters
Conductor Gauge: 26 AWG
Protocol: 100GbE / 50GbE Ethernet
Pack Quantity: 4 cables (Lot of 4)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Spectrum series switches (SN2000, SN2700) configured for 100GbE port-splitting, and ConnectX-4/ConnectX-5 EN adapters operating in 50GbE mode. Both 50GbE legs require host or switch ports that explicitly support 50GbE (2×25G). Not compatible with InfiniBand fabrics. Does not split into 4× 25GbE; this is a 1:2 hybrid (100→2×50), not a 1:4 breakout. Fixed 3-meter passive copper reach — does not extend over fiber. Both ends are QSFP28 (not SFP28).
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS link-tests every passive copper cable for continuity, signal integrity, and connector latching before shipment. Visit tes-itsolutions.com for our full Mellanox cable catalog. Standard handling time is 1–3 business days with global shipping options.