NVIDIA Mellanox MCX75310AAS-HEAT ConnectX-7 200Gb/s VPI Adapter, Single OSFP, PCIe 5.0 x16, No-Crypto, Tall Bracket: This is a single-port OSFP ConnectX-7 VPI network adapter rated at 200Gb/s line rate over a PCIe 5.0 x16 host interface. NVIDIA P/N 900-9X766-003N-ST0. The "No-Crypto" SKU does not include onboard inline IPsec/TLS hardware encryption. The card ships with a tall (full-height) bracket. This is a Virtual Protocol Interconnect (VPI) adapter that operates as either InfiniBand NDR-class 200Gb/s or 200GbE Ethernet by host configuration. This is a refurbished unit.
Engineering Context
The MCX75310AAS-HEAT is built on the ConnectX-7 ASIC and uses an OSFP cage as its single network port. PCIe 5.0 x16 host bandwidth is what allows a single 200Gb/s line rate to be sustained without bus-side oversubscription on capable platforms. OSFP supports the higher per-port power budget needed for next-generation pluggables and 200G/400G transceivers, and the cage itself is mechanically larger than QSFP56/QSFP-DD. The No-Crypto build is intended for deployments where regulatory or policy constraints preclude shipping an adapter with inline cryptographic hardware. The tall bracket fits standard rack-server PCIe slots that require full-height cards.
Deployment & Use Cases
NVIDIA HGX H100 / H200 GPU compute nodes connecting into NDR-class InfiniBand fabrics. AI training clusters running Magnum IO and GPUDirect RDMA. NVMe-over-Fabrics initiators and targets at 200GbE. RoCE v2 spine-leaf Ethernet fabrics for analytics and real-time inference. PCIe 5.0 server platforms (e.g., Intel Xeon 4th/5th-gen Scalable, AMD EPYC 9004) where the host bus can sustain a single 200Gb/s line rate.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCX75310AAS-HEAT
NVIDIA P/N: 900-9X766-003N-ST0
Adapter Family: ConnectX-7 VPI
Network Port: 1× OSFP
Line Rate: Up to 200Gb/s per port
Protocols: InfiniBand 200Gb/s / 200GbE Ethernet (VPI)
Host Bus: PCIe 5.0 x16
Cryptography: No-Crypto (no onboard inline IPsec/TLS)
Bracket: Tall (full-height)
Acceleration: RDMA, RoCE v2, GPUDirect (ConnectX-7 family)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Constraints
Requires a server platform with a PCIe 5.0 x16 slot to reach full line rate; PCIe 4.0 x16 will operate but caps host throughput below 200Gb/s sustained. Compatible with NVIDIA Quantum-2 InfiniBand switches and Spectrum-3/Spectrum-4 Ethernet switches. Cabling must be OSFP (OSFP-to-OSFP DAC/AOC, OSFP transceiver, or OSFP-to-2×QSFP56 breakout for 2×100G usage). Not compatible with QSFP56-only switch ports without an OSFP-to-QSFP56 breakout assembly. Not suitable for deployments that mandate onboard inline crypto offload — a different ConnectX-7 SKU is required for that. Driver stack: NVIDIA MLNX_OFED for Linux or WinOF-2 for Windows.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS validates each ConnectX-7 adapter on a PCIe 5.0 reference platform, confirming OSFP signal integrity, link training at 200Gb/s, and thermal stability before shipment. Visit tes-itsolutions.com for the full Mellanox NIC catalog. Handling time is 1–3 business days with global shipping and a comprehensive warranty.