NVIDIA Mellanox MCP7H00-G02B 100GbE to 2x50GbE Passive Copper Hybrid Breakout Cable, 2.25m: This is a 2.25-meter passive copper hybrid breakout cable that splits a single 100GbE QSFP28 port into two independent 50GbE QSFP28 links. The Y-shaped assembly has one QSFP28 connector on the switch side and two QSFP28 connectors on the destination side, with bonded twinax pairs grouped 2-2. This is a fixed-length integrated assembly, not a transceiver with a detachable patch cord. This is a new (factory-sealed) unit.
Engineering Context
The MCP7H00-G02B uses 26 AWG twinax copper and carries 100Gb/s aggregate (4x25Gb/s NRZ) on the host side, splitting into two 50GbE (2x25Gb/s NRZ) lanes on the destination side. The 2.25m length sits comfortably within the reliable passive copper window for 25G NRZ. The cable is fully passive with zero power draw; link partners must negotiate and apply RS-FEC (CL91) per IEEE 802.3 for 50GbE link operation.
Deployment & Use Cases
Intra-rack and short inter-rack connections where a 100GbE QSFP28 port aggregates two 50GbE-capable endpoints. Connecting NVIDIA Spectrum SN2700 or SN3700 switches to ConnectX-5 EN servers in 50GbE mode. HPC fan-out where pairs of compute nodes share an upstream 100GbE port. Storage cluster attachment where 50GbE per node is sufficient and switch port density is constrained.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCP7H00-G02B
NVIDIA OEM Code: 980-9I997-A5C02C
Form Factor: 1x QSFP28 to 2x QSFP28 (Hybrid Breakout)
Data Rate: 100GbE → 2x 50GbE (4x25Gb/s NRZ split 2+2)
Cable Type: Passive Copper Hybrid Breakout
Length: 2.25m
Cable Gauge: 26 AWG
Protocol: 100GbE / 50GbE Ethernet
Power Draw: Passive (0W)
Condition: New — Factory-sealed, distributed by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Spectrum SN2700, SN3700, and equivalent 100GbE QSFP28 switches that support 50GbE breakout. Compatible with ConnectX-5 EN and ConnectX-6 Dx in 50GbE single-lane mode (2x25G NRZ). The 100GbE switch port must be configured for 2x50G breakout in software. Not compatible with switches lacking 50GbE breakout firmware support. Not compatible with 200GbE PAM4 endpoints. Not compatible with 40GbE-only QSFP+ ports. Not a transceiver-and-patch-cord assembly; the 2.25m length and Y topology are fixed.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS verifies all three connectors, lane continuity, and Y-junction integrity on every hybrid cable before shipment. We provide expert consultation on 100GbE/50GbE breakout topologies, global shipping with 1–3 day handling, and dedicated post-sales support. Visit https://www.tes-itsolutions.com for warranty terms and the full catalogue.