Lenovo Mellanox 01PG737 QSFP56 200Gb/s to 2x100Gb/s InfiniBand HDR Passive Copper Splitter DAC, 1m: This is a 1-meter passive copper splitter cable that connects a single 200Gb/s QSFP56 HDR port to two independent 100Gb/s QSFP56 HDR100 endpoints. The Lenovo 01PG737 is the OEM-branded equivalent of the NVIDIA MCP7H50-H001 (980-9I39E-00H001). This is a refurbished unit.
Engineering Context
The 01PG737 enables 2:1 fan-out from 200G HDR switch ports without active electronics. As a passive copper assembly, it introduces zero additional latency, consumes no power, and requires no firmware. The cable splits the four PAM4 lanes of a single 200G QSFP56 port into two groups of two lanes, each delivering 100Gb/s HDR100 to a separate QSFP56 endpoint. This is a standard topology in HDR clusters where switch port density must be maximized to serve more compute nodes.
Deployment and Use Cases
Splitting 200G HDR switch ports to connect two 100G compute nodes or storage endpoints. Lenovo ThinkSystem HPC clusters requiring maximum port utilization from Quantum HDR switches. Gradual migration from HDR100 to HDR200 fabrics. In-rack connectivity for HDR InfiniBand AI training and HPC workloads.
Technical Specifications
OEM: Lenovo
Part Number: 01PG737
NVIDIA Cross-Reference: MCP7H50-H001 / 980-9I39E-00H001
Cable Type: Passive Copper Splitter DAC
Connectivity: 1x QSFP56 to 2x QSFP56
Protocol: InfiniBand HDR
Bandwidth: 200Gb/s to 2x100Gb/s
Signaling: PAM4
Length: 1 meter
Power: 0W (passive)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility and Hard Constraints
QSFP56 Ports Only: All three connectors are QSFP56. Not compatible with QSFP28, QSFP-DD, or OSFP ports. HDR Only: Designed for InfiniBand HDR (200Gb/s) signaling. Not compatible with NDR (400/800Gb/s) which uses different connectors and signaling. Switch Split Mode Required: The host switch port must support QSFP56 2x breakout mode. Electrically equivalent to NVIDIA MCP7H50-H001.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS validates every HDR splitter cable for lane mapping integrity and signal quality before shipment. We provide expert consultation on HDR fabric topology, global shipping with tracking, and comprehensive warranty.