NVIDIA Mellanox MCP7Y70-H002 HDR Splitter DAC, OSFP to 4x QSFP56, 400Gb/s to 4x 100Gb/s, 2m: This is a passive Direct Attach Copper (DAC) splitter cable for InfiniBand HDR fabrics. It splits a single 400Gb/s OSFP port into four independent 100Gb/s HDR100 links over QSFP56 connectors. This is a passive electrical assembly with no optical conversion, retimers, or active components. This is a new factory unit.
Engineering Context
The MCP7Y70-H002 enables 1:4 fan-out of HDR 400 ports into HDR100 links. A single OSFP cage on a NVIDIA Quantum-2 switch (QM9700/QM9790) terminates four downstream HDR100 hosts, multiplying effective port density at the leaf layer. As a passive copper assembly with 28AWG conductors and an LSZH jacket, it consumes 0W and introduces near-zero electrical latency. At 2m, it is within the passive copper reach budget for HDR signaling.
Deployment & Use Cases
HDR100 fan-out from Quantum-2 spine ports to ConnectX-7 HDR100 hosts. AI/HPC GPU compute clusters built on NVIDIA HDR fabrics. Cost-optimized port-density expansion at the leaf layer. In-rack runs to multiple HDR100 servers from a single HDR 400 OSFP cage.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCP7Y70-H002
NVIDIA P/N Reference: 980-9I93O-00H002
Form Factor: OSFP to 4x QSFP56 (Splitter)
Data Rate: 400Gb/s HDR → 4x 100Gb/s HDR100
Cable Type: Passive Copper DAC
Length: 2m
Gauge: 28AWG
Jacket: LSZH
Power Consumption: 0W (passive)
Condition: New
Compatibility & Constraints
Compatible with NVIDIA Quantum-2 HDR switches with OSFP HDR 400 cages (QM9700, QM9790) and ConnectX-7 adapters configured for HDR100. The OSFP port must be configured for 4x HDR100 split mode on the switch side. Not compatible with HDR 200 (QSFP56) source cages — this cable expects an OSFP HDR 400 host. Not designed for Ethernet-only ports without InfiniBand support.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS validates every HDR splitter DAC for conductor continuity, connector seating, and HDR link training in 4x HDR100 split mode prior to shipment. Our team provides expert consultation on Quantum-2 fabric design, 1–3 day handling, and global shipping. Visit the product page for details and warranty information.