NVIDIA Mellanox MCP4Y10-N00A 800Gb/s NDR Passive Copper DAC, OSFP RHS, 0.5m: This is a 0.5-meter passive Direct Attach Copper (DAC) cable engineered for 800Gb/s InfiniBand NDR connectivity using OSFP Riding Heat Sink (RHS) finned-top connectors at both ends. This is a passive cable with no retimers, DSPs, or active electronics — it is not an Active Copper Cable (ACC) and not an active optical cable (AOC). This is a new factory-sealed unit.
Engineering Context
The MCP4Y10-N00A carries 8x100Gb/s PAM4 lanes for an 800Gb/s aggregate data rate. Power consumption is 0W and added latency is limited to copper-propagation delay because no retiming or DSP processing is performed. The OSFP RHS form factor uses an external finned heat sink riding atop the connector, designed for the thermal envelope of NVIDIA Quantum-2 NDR switches and ConnectX-7 NDR adapters. At 0.5m, the cable is short enough that signal-integrity loss is minimal, but the heavy 800G conductor gauge produces a thick and very stiff assembly suited only to directly adjacent ports.
Deployment & Use Cases
Quantum-2 switch stacking between adjacent chassis. Inter-Switch Links (ISL) over very short reaches inside the same rack. Side-by-side switch uplink ports where the OSFP cages are physically aligned. AI and HPC racks requiring zero-power, zero-DSP-latency 800G NDR connectivity over the shortest practical span.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number (MPN): MCP4Y10-N00A
NVIDIA P/N: 980-9IA0K-00N00A
Form Factor: OSFP RHS to OSFP RHS
Data Rate: 800Gb/s (8x 100Gb/s PAM4)
Cable Type: Passive Direct Attach Copper (DAC)
Length: 0.5m
Power Consumption: 0W
Protocol: InfiniBand NDR
Condition: New, factory sealed
Compatibility & Constraints
Compatible with NVIDIA Quantum-2 NDR switches and NDR-class ConnectX-7 adapters that accept OSFP RHS (finned-top) modules. Not compatible with flat-top OSFP cages — the riding heat sink will not clear standard OSFP slots. Not interchangeable with QSFP56 or QSFP-DD ports. The 0.5m 800G assembly is very stiff; install only where ports are directly aligned. Avoid sharp bends, cable management arms, and aggressive routing to prevent connector or cage damage. Fixed 0.5m length with no breakout option.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS supplies new and refurbished NVIDIA Mellanox networking hardware globally with verified-condition stock. Visit T.E.S IT-SOLUTIONS for catalog access and technical consultation on NDR fabric cabling. Handling time 1–3 business days.