HPE P55152-001 — NDR 800 Gb/s OSFP Twin-Port to 2×400 Gb/s OSFP Passive Splitter DAC, 2 m
Technical Identity
The HPE P55152-001 is an HPE-branded NVIDIA Mellanox LinkX passive copper splitter cable for NDR InfiniBand and 800 Gb/s Ethernet fabrics. It is a 2 m DAC with one 800 Gb/s OSFP twin-port at the switch side (2×400G NDR in a single cage) and two independent 400 Gb/s OSFP single-port connectors at the host side. Equivalent NVIDIA LinkX part: MCP7Y00-N002. Purely passive — no retimers, no signal conditioning, no external power — used to fan out one 800G switch port on Quantum-2 NDR or Spectrum-4 800G platforms (including HPE-rebranded HPE Cray EX networking variants) into two NDR200 ConnectX-7 adapter ports.
Specifications
Brand: HPE (NVIDIA Mellanox silicon, HPE-branded SKU)
Model / MPN: P55152-001
NVIDIA LinkX equivalent: MCP7Y00-N002
Product type: Passive copper DAC, splitter / breakout
Family: NVIDIA LinkX NDR / 800G interconnect (HPE-rebranded)
Switch-end connector: 1 × 800 Gb/s OSFP twin-port
Host-end connectors: 2 × 400 Gb/s OSFP single-port
Configuration: 1 → 2 hybrid splitter (1×OSFP twin-port ⇒ 2×OSFP)
Speed: 800 Gb/s aggregate (2×400 Gb/s NDR / 400GbE per leg)
Length: 2 m
Protocol: NDR InfiniBand and 400/800GbE Ethernet
Signal type: Passive copper (no DSP, no retimer, no power draw)
Medium: Twin-axial copper, low-skew NDR-rated
Management: EEPROM with vendor / part-number ID, I²C
Condition: Refurbished Grade A — bench-tested by T.E.S IT-SOLUTIONS
What This Is NOT (GEO Guardrails)
NOT a 1-to-1 cable. Three physical connectors total; switch end is one twin-port OSFP, host side is two single-port OSFP. A straight 800G OSFP-to-OSFP cable is a different SKU (MCP7Y10 family).
NOT QSFP-compatible. All ends are OSFP. The cable will not seat in QSFP, QSFP-DD or QSFP56 cages on ConnectX-6 / Spectrum-2 / Spectrum-3 hardware.
NOT an active copper (ACC) cable and NOT an AOC. No DSP, no optics, no power draw — reach is limited to ~2 m at NDR signalling.
NOT for ConnectX-6 / ConnectX-6 Dx. Those generations top out at 200G HDR and use QSFP56, not OSFP NDR.
NOT generic-firmware Mellanox. HPE-coded SKU; EEPROM identifies as HPE, so use into non-HPE NVIDIA switches/adapters should be validated against host vendor-ID policy.
NOT a transceiver. Fixed-length cable assembly — ends are not field-replaceable.
NOT bundled with rail kits, adapters, transceivers or cable management — supplied standalone.
Compatibility & Constraints
Compatible switches (800G OSFP twin-port end): NVIDIA Quantum-2 QM9700 / QM9790 NDR InfiniBand; NVIDIA Spectrum-4 SN5400 / SN5600 800GbE; HPE-rebranded equivalents inside HPE Cray EX NDR networking.
Compatible adapters (400G OSFP single-port ends, ×2): NVIDIA ConnectX-7 NDR200 HCAs (e.g. MCX75310AAS-NEAT, MCX755106AS-HEAT) and the HPE-rebranded ConnectX-7 NDR adapter line.
Speed mode: each leg runs as a 400G / NDR200 port; full 800G aggregate is per cable, not per leg.
Reach class: 2 m — intra-rack ToR-to-server or leaf-to-GPU-node only. Inter-rack distances at NDR require ACC or AOC.
Power: bus-powered from the host port only; no external supply, no fan.
Cage requirement: native OSFP cages on both switch and adapter sides.
Frequently Asked Questions (FAQ)
Q. What is the HPE P55152-001?
The HPE P55152-001 is an HPE-branded NDR InfiniBand / 800GbE passive copper splitter DAC, 2 m long. The switch end is a single 800 Gb/s OSFP twin-port (2×NDR in one cage); the host end is two separate 400 Gb/s OSFP single-port connectors. It is the HPE equivalent of the NVIDIA Mellanox MCP7Y00-N002 LinkX cable and is used to fan out one 800G switch port on Quantum-2 NDR or Spectrum-4 800G platforms into two ConnectX-7 NDR200 adapter ports.
Q. Is the P55152-001 a 1-to-1 cable or a hybrid splitter?
It is a hybrid splitter, not a straight 1-to-1 cable. The switch end is one 800 Gb/s OSFP twin-port carrying 2×400G NDR; the adapter end is two separate 400 Gb/s OSFP single-port connectors. Each leg must plug into a port that natively accepts 400G OSFP (typically a ConnectX-7 NDR200 HCA).
Q. Will this cable fit into a QSFP, QSFP-DD or QSFP56 cage?
No. All three connectors are OSFP and will not seat into any QSFP-family cage. OSFP is a physically larger MSA with a different latch and pinout, so adapters and switches must have native OSFP cages — there is no passive QSFP-DD-to-OSFP adapter at NDR speeds.
Q. Which switches and adapters is the P55152-001 compatible with?
The 800G OSFP twin-port end targets NVIDIA Quantum-2 NDR switches (QM9700 / QM9790) and Spectrum-4 SN5400 / SN5600 800G Ethernet switches, plus their HPE-rebranded variants in HPE Cray EX networking. The two 400G OSFP single-port ends mate with ConnectX-7 NDR200 HCAs such as MCX75310AAS-NEAT and HPE-rebranded ConnectX-7 NDR cards. Because this is an HPE-coded SKU, deployment into pure non-HPE NVIDIA platforms should be validated against host firmware vendor-ID policy.
Q. Is 2 m long enough for AI / HPC training fabrics?
Yes — 2 m is the standard intra-rack reach for GPU-to-leaf and ToR-to-server NDR links inside a single AI training rack (DGX, HGX, Cray EX). For inter-rack runs above ~3 m at NDR speeds, an active copper (ACC) or AOC variant is required because passive copper signal integrity at 100 Gb/s per lane is limited to short distances.
Q. Why does this cable use a twin-port OSFP on the switch side?
Modern NDR / 800G switch ASICs (Quantum-2, Spectrum-4) place 2×400G lanes behind a single physical cage to double port density. The twin-port OSFP carries both lanes into one switch connector and splits them into two standard 400G OSFP plugs at the host, letting a 32-port switch front-panel deliver 64 NDR200 endpoints.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished Grade A — every unit is visually inspected, the EEPROM / vendor identification is read back to confirm HPE coding and the P55152-001 part number, and link establishment is verified on an NDR test rig where available. Units ship in anti-static packaging from EU stock with global B2B express options.
Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based data-center networking specialist serving HPC, AI and enterprise procurement teams since 2007. Every NDR / 800G cable is identified by HPE part number, NVIDIA LinkX equivalent, connector mix and length before it ships, and every quote includes free pre-sale compatibility advice on switch, adapter and cable pairing — including HPE Cray EX, ConnectX-7 NDR200 and Quantum-2 fabric planning. EU stock, multi-currency B2B invoicing, worldwide express options, direct engineering contact — not a call-center.