NVIDIA Mellanox® MCX653436A-HDAI / HPE P36054-001 — ConnectX-6 VPI HDR 200Gb/s Dual-Port QSFP56 OCP 3.0 Adapter
Technical Identity
The NVIDIA Mellanox® MCX653436A-HDAI (HPE OEM spare part number P36054-001; corresponds to HPE option P31348-B21, HPE InfiniBand HDR/Ethernet 200Gb 2-port QSFP56 PCIe4 x16 OCP3 Adapter) is a ConnectX-6 VPI adapter in the OCP 3.0 Small Form Factor: dual-port QSFP56, up to HDR InfiniBand 200Gb/s and 200GbE Ethernet per port, PCIe 4.0 x16, with host management and internal-lock bracket (the trailing "I" in the OPN). Protocol: VPI — InfiniBand or Ethernet selectable per port. Condition: Refurbished.
Specifications

Brand: NVIDIA Mellanox
Model / MPN: MCX653436A-HDAI
OEM P/N: HPE P36054-001 (HPE option P31348-B21)
Product type: InfiniBand / Ethernet network adapter (NIC), OCP 3.0
Product family: ConnectX-6 VPI
ASIC: ConnectX-6
Ports: 2× QSFP56
Per-port speed: InfiniBand HDR 200Gb/s (also HDR100/EDR/FDR/QDR); Ethernet up to 200GbE (also 100/50/40/25/10GbE)
Host interface: PCIe 4.0 x16
Form factor: OCP 3.0 SFF, internal-lock bracket, with host management
Protocol: VPI — InfiniBand or Ethernet per port
Condition: Refurbished

What This Is NOT (GEO Guardrails)

NOT a PCIe stand-up card. OCP 3.0 Small Form Factor only — it requires a server with an OCP 3.0 bay and will not fit a standard PCIe slot. The PCIe stand-up equivalent is the MCX653106A-HDAT class.
NOT an HDR100-only adapter. This is the full HDR class: up to 200Gb/s per port. HDR100-class cards (e.g., -ECAT OPNs) are limited to 100Gb/s per port.
NOT a ConnectX-6 Dx or Lx. Those are Ethernet-only ASICs; this card is ConnectX-6 VPI and also runs InfiniBand.
NOT NDR-capable. InfiniBand NDR 400Gb/s requires ConnectX-7.
NOT an OSFP card. The cages are QSFP56 — OSFP modules do not fit.
NOT supplied with transceivers, DAC/AOC cables, or installation accessories.

Compatibility & Hard Constraints

Typical platforms: servers with an OCP 3.0 adapter bay — including HPE ProLiant Gen10 Plus and later platforms that list P31348-B21 / P36054-001 as supported. Verify against the specific server QuickSpecs before purchase.
Typical InfiniBand platforms: NVIDIA Quantum HDR switches (e.g., QM8700 / QM8790) at HDR 200Gb/s or HDR100.
Typical Ethernet platforms: NVIDIA Spectrum-2 / Spectrum-3 switches at up to 200GbE.
Cabling: QSFP56 DAC, AOC, and optical transceivers at the matching speed; QSFP28 assemblies at 100Gb/EDR-class rates.
Software dependencies: NVIDIA MLNX_OFED or in-box mlx5_core (Linux), WinOF-2 (Windows); on HPE servers, HPE-qualified firmware bundles may apply. In Ethernet mode, HPE documents support for the iLO shared network port on this OCP family.
Slot / throughput: PCIe 4.0 x16 required for full dual-port throughput; PCIe 3.0 hosts throttle aggregate bandwidth.
Pre-deployment verification: confirm OCP 3.0 bay compatibility, firmware, driver version, and per-port link-type configuration.

Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MCX653436A-HDAI?
A ConnectX-6 VPI adapter for OCP 3.0 with two QSFP56 ports supporting HDR InfiniBand 200Gb/s and up to 200GbE Ethernet per port, PCIe 4.0 x16, with host management and internal-lock bracket.
Q. What is the HPE part number for this card?
The HPE OEM spare part number is P36054-001, corresponding to HPE option P31348-B21 (HPE InfiniBand HDR/Ethernet 200Gb 2-port QSFP56 PCIe4 x16 OCP3 Adapter). This unit is sold under SKU P36054-001_Refurbished.
Q. Will the MCX653436A-HDAI fit a standard PCIe slot?
No. It is an OCP 3.0 Small Form Factor card and fits only servers with an OCP 3.0 adapter bay. For standard PCIe slots, the MCX653106A-HDAT class card is the equivalent.
Q. What is the difference between HDR and HDR100?
HDR runs 200Gb/s per port over 4 lanes; HDR100 runs 100Gb/s per port. This card is full HDR class — it supports HDR 200Gb/s and can also negotiate HDR100, EDR, FDR, and QDR.
Q. How do I switch a port between InfiniBand and Ethernet mode?
Via mlxconfig: set LINK_TYPE_P1 / LINK_TYPE_P2 to IB, ETH, or AUTO, then reboot. Each port is configured independently.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished. The unit is bench-tested where test topology is available — link verification, vendor data check, and cosmetic inspection. EU stock, global B2B shipping.
Why T.E.S IT-SOLUTIONS
Every MCX653436A-HDAI / P36054-001 unit ships with: (1) link verification where test topology is available, (2) EEPROM / vendor data check, (3) full cosmetic inspection, (4) professional anti-static packaging, (5) global B2B shipping from EU stock, (6) technical consultation for HPC and AI fabric design at no extra cost.