HPE P55152-001 (NVIDIA MCP7Y00-N002) NDR InfiniBand 800Gb/s OSFP to 2x400Gb/s OSFP Passive Copper Splitter DAC, 2m: This is a 2-meter passive copper splitter cable that fans out a single 800Gb/s OSFP NDR port into two independent 400Gb/s OSFP NDR connections. Cross-reference: NVIDIA MCP7Y00-N002 / 980-9I924-00N002. As a passive DAC, it requires zero power and introduces no active signal processing latency. This is a refurbished unit.
Engineering Context
The P55152-001 enables 1:2 port fan-out at the NDR generation. A single 800G OSFP switch port running 8 lanes of 100G PAM4 is physically split into two 4-lane 400G OSFP endpoints. Because the cable is passive copper with no retimers or DSP, latency is deterministic and measured in sub-nanosecond propagation delay only. The 2-meter length accommodates adjacent-rack and in-rack connectivity while keeping copper mass and bend radius manageable for high-density cable trays.
Deployment & Use Cases
Doubling 400G NDR endpoint count from Quantum-2 (QM9700) switch ports without additional switch hardware. Connecting two ConnectX-7 400G NDR adapters to a single 800G switch port in AI/GPU training clusters. In-rack and adjacent-rack fan-out in NVIDIA SuperPOD and DGX-style architectures. Spine-to-leaf aggregation where 800G spine ports serve dual 400G leaf switches.
Technical Specifications
OEM: HPE (Mellanox Original)
HPE Part Number: P55152-001
Cross-Reference: NVIDIA MCP7Y00-N002 / 980-9I924-00N002
Connector (Source): 1x OSFP
Connector (Endpoints): 2x OSFP
Data Rate: 800Gb/s to 2x 400Gb/s NDR (8x 100G PAM4 split to 2x 4x 100G PAM4)
Cable Type: Passive Copper DAC Splitter (0W)
Length: 2m
Protocol: InfiniBand NDR
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
OSFP Ports Required: All three connectors (1 source + 2 endpoints) are OSFP. Not compatible with QSFP56, QSFP28, or QSFP-DD ports. NDR Only: Requires NDR-capable switch ports with 800G OSFP split/breakout mode enabled. Not backward compatible with HDR (200G) QSFP56 equipment. Switch Configuration: The source port must be configured for 2x400G breakout mode in the switch firmware. Passive Copper Limitations: Fixed 2m length, cannot be extended. Signal integrity degrades beyond manufacturer-specified reach.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS validates every NDR splitter cable for lane mapping integrity, signal quality, and connector condition before shipment. We provide expert consultation on NDR fabric topology and cabling design, global shipping, and comprehensive warranty.