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.
Primary Workloads & Use Cases
AI training fabrics: GPUDirect RDMA and GPU-to-GPU clustering for NVIDIA HGX/DGX-class AI systems.
HPC clusters: MPI over InfiniBand verbs, SHARPv3 in-network compute on Quantum-2 fabrics.
Storage fabrics: NVMe-oF initiators and targets over RoCE v2 or native InfiniBand.
Virtualized / cloud-native environments: SR-IOV, ASAP² hardware-accelerated Open vSwitch, container and Kubernetes acceleration.
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.
Q. What is the difference between HEAT and NEAT variants of this ConnectX-7 card?
NEAT indicates no in-line crypto: no hardware IPsec, TLS, or MACsec offload, in a standard tall-bracket HHHL form factor. HEAT-suffix ConnectX-7 SKUs add hardware crypto offload for line-rate IPsec/TLS/MACsec. The MCX75210AAS-NEAT is the no-crypto variant; for hardware crypto acceleration, use the corresponding HEAT SKU.
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.