NVIDIA Mellanox MCP7Y00-N002 InfiniBand NDR 800Gb/s OSFP Passive Copper Splitter (DAC), 2m: This is a 2-meter passive copper Direct Attach Cable configured as a 1-to-2 splitter, providing one 800Gb/s OSFP input and two independent 400Gb/s OSFP outputs. It is engineered for InfiniBand NDR fabrics with PAM4 signaling. This is a passive cable with no retimers, no DSP, and zero power draw. This is NOT an active copper (ACC) cable, NOT an AOC, and the connectors are NOT QSFP-DD, QSFP112, or QSFP56. This is a NEW unit.
Engineering Context
The MCP7Y00-N002 enables port density expansion in NDR fabrics by splitting a single 800Gb/s twin-port OSFP into two 400Gb/s OSFP links. Passive copper construction at 2m uses thick low-AWG conductors to preserve PAM4 eye margins without active electronics, delivering deterministic latency suitable for synchronous AI training. The 2m reach sits at the upper end of the passive 800Gb/s envelope; longer spans require ACC or AOC. The assembly is heavy and stiff, which constrains routing through cable management arms and tight bends.
Deployment & Use Cases
Splitting an 800Gb/s spine port into two 400Gb/s leaf uplinks in InfiniBand NDR clusters. Connecting an 800Gb/s twin-port switch to two adjacent ConnectX-7 OSFP NICs running in 400G split-port mode. Cross-rack interconnects in GPU compute pods used for large language model training. NVIDIA Quantum-2 fabric expansions where port count is the binding constraint.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCP7Y00-N002
Form Factor: OSFP (input) to 2x OSFP (outputs)
Aggregate Data Rate: 800Gb/s
Per-Leg Data Rate: 400Gb/s (each output)
Cable Type: Passive Copper Splitter DAC
Length: 2m
Signaling: PAM4
Protocol: InfiniBand NDR
Power Draw: 0W (passive)
Condition: NEW — Factory-sealed, supplied by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Quantum-2 InfiniBand switches and ConnectX-7 OSFP adapters configured for 400G split-port operation. Requires switch ports that support OSFP breakout mode and a host configuration that recognizes the cable as two independent 400Gb/s links. NOT compatible with QSFP-DD, QSFP112, or QSFP56 ports — all three connectors are OSFP only. Confirm OSFP thermal style (Flat-Top vs. Riding Heat Sink) matches the port cage on each end before installation. Fixed 2m length and not field-terminable.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS supplies NEW MCP7Y00-N002 cables in factory packaging and verifies each unit before dispatch. We answer NDR fabric design questions, ship globally with a 1–3 day handling window, and back every part with our return policy. Visit tes-itsolutions.com for our full NVIDIA Mellanox catalog.