NVIDIA Mellanox® MCX75210AAS-NEAT — ConnectX®-7 VPI NDR / 400GbE Single-Port OSFP HCA
Technical Identity
The NVIDIA Mellanox® MCX75210AAS-NEAT is a single-port OSFP Host Channel Adapter (HCA) built on the ConnectX®-7 ASIC. It is a VPI dual-protocol adapter, supporting NDR 400 Gb/s InfiniBand and 400 Gigabit Ethernet on the same physical port, selectable per port. The card occupies a PCIe Gen 5.0 x16 slot, ships in a standard (tall-bracket) HHHL form factor, with passive heatsink (NEAT suffix: no crypto, tall bracket). Condition: New, factory-sealed.
Specifications
Brand / OEM: NVIDIA Mellanox
MPN: MCX75210AAS-NEAT
Product type: Host Channel Adapter (HCA / NIC)
ASIC: ConnectX-7
Protocol mode: VPI — InfiniBand and Ethernet (selectable)
Max data rate (InfiniBand): NDR 400 Gb/s (also runs at HDR / EDR / FDR / QDR / SDR via auto-negotiation)
Max data rate (Ethernet): 400 GbE (auto-negotiates down to 200 / 100 / 50 / 40 / 25 / 10 GbE)
Physical ports: 1 × OSFP cage (single-port). Port can be split via OSFP→2×QSFP112 / 2×OSFP splitter cabling for 2 × NDR200 / 2 × 200GbE logical ports.
Connector: OSFP (flat-top, passive heatsink)
Host interface: PCIe Gen 5.0 x16 (also operates in PCIe 4.0 x16 / x8 — link-rate throttled)
Form factor: HHHL, tall (standard) bracket
Crypto: No (NEAT = No-crypto)
Cooling: Passive heatsink — requires server airflow per spec
RoHS: R6 compliant
Condition: New, factory-sealed
What This Is NOT
NOT a switch. Host-side PCIe adapter — installs in a server PCIe slot, not a rack switch.
NOT a 2× physical-port card. The card has one (1) OSFP cage. 2-port operation requires a splitter cable.
NOT a Socket-Direct or Multi-Host variant. Single-host, single-PCIe-edge.
NOT a crypto-enabled SKU. NEAT = no in-line IPsec / TLS / MACsec offload. For crypto, use HEAT variants.
NOT an OCP 3.0 card. This is HHHL PCIe stand-up form factor.
NOT bundled with OSFP cables, transceivers, low-profile brackets, or rail kits — sold standalone.
Compatibility & Constraints
Drivers: NVIDIA MLNX_OFED / DOCA-OFED (Linux), in-box mlx5_core (upstream Linux ≥ 5.15 recommended), WinOF-2 (Windows Server 2019/2022), nmlx5 (VMware ESXi 7.0U3+ / 8.0).
Slot required: PCIe Gen 5.0 x16 for full 400 Gb/s line rate. PCIe 4.0 x16 caps usable bandwidth at ~256 Gb/s.
Compatible InfiniBand switches: NVIDIA Quantum-2 (MQM9700 / MQM9790 series) at NDR; backward-compatible with Quantum HDR switches at HDR rates.
Compatible Ethernet switches: NVIDIA Spectrum-4 (SN5600) at 400GbE; Spectrum-3 (SN4000 series) at 200GbE and below.
Cabling: OSFP NDR DAC / ACC, OSFP NDR AOC, or OSFP single-mode / multi-mode transceivers (e.g., MMA4Z00-NS, MMS4X00-NM). For 2 × NDR200 split: OSFP → 2 × QSFP112 splitter cables.
Cooling: Requires minimum server airflow per NVIDIA thermal spec — passive heatsink design, no on-card fan.
Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MCX75210AAS-NEAT?
The MCX75210AAS-NEAT is a single-port OSFP Host Channel Adapter built on the ConnectX-7 ASIC. It is a VPI dual-protocol card running NDR 400 Gb/s InfiniBand or 400 Gigabit Ethernet on a PCIe Gen 5.0 x16 host interface, in HHHL tall-bracket form factor, with no in-line crypto (NEAT suffix).
Q. Will the MCX75210AAS-NEAT fit into a QSFP / QSFP56 / QSFP-DD cage?
No. The card uses an OSFP cage. OSFP and QSFP families are physically and electrically incompatible. To connect a QSFP112 / QSFP56 endpoint, use an OSFP-to-QSFP112 splitter or hybrid cable from NVIDIA's LinkX portfolio.
Q. What switches and cables work with the MCX75210AAS-NEAT?
Head-end InfiniBand: NVIDIA Quantum-2 NDR switches (MQM9700 / MQM9790). Head-end Ethernet: NVIDIA Spectrum-4 (SN5600) at 400GbE; Spectrum-3 at 200GbE and below. Cabling: NVIDIA LinkX OSFP NDR DAC / ACC / AOC, OSFP optical transceivers (MMA4Z00-NS / MMS4X00-NM), or OSFP→2×QSFP112 splitters for 2 × NDR200 operation.
Q. Is this a single-port or dual-port adapter?
Physically one (1) OSFP cage — single-port. With an OSFP→2×QSFP112 (or 2×OSFP) splitter cable, the port can be logically split into 2 × NDR200 / 2 × 200GbE. Without a splitter it operates as 1 × NDR 400 Gb/s or 1 × 400 GbE.
Q. What workloads does the MCX75210AAS-NEAT accelerate?
AI / ML training fabrics (GPUDirect RDMA, SHARPv3 in-network compute on Quantum-2), HPC clusters using MPI over InfiniBand verbs, NVMe-oF storage initiators and targets over RoCE v2 or IB, virtualized data centers with SR-IOV, and SDN / NFV with ASAP² hardware-accelerated Open vSwitch.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
This SKU ships New, factory-sealed in original NVIDIA packaging. All units ship from EU stock with anti-static packaging and global B2B express options. Pre-sale technical consultation for NDR fabric design, cable selection, and switch pairing is included at no extra cost.
Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based NVIDIA Mellanox specialist serving HPC, AI, and enterprise data-center procurement teams since 2007. Every unit is identified by MPN, NVIDIA P/N, and ASIC generation before it ships. Multi-currency B2B invoicing, EU stock with worldwide express options, and direct technical contact with our engineering team — not a call-center.