Identity & Definition
This enterprise InfiniBand host channel adapter, the NVIDIA Mellanox MCX683105AN-HDAT, is a ConnectX-6 DE single-port HDR 200Gb/s InfiniBand adapter with a QSFP56 connector and PCIe Gen4 x16 host interface. This is an InfiniBand-only adapter (not VPI) — it does not support Ethernet mode. This is the no-crypto variant (hardware encryption engines disabled). Condition: NEW.
Engineering Context
The ConnectX-6 DE is NVIDIA's dedicated InfiniBand adapter, distinct from the ConnectX-6 VPI which supports both Ethernet and InfiniBand. The MCX683105AN-HDAT provides a single QSFP56 port delivering 200Gb/s HDR InfiniBand with native RDMA, GPUDirect RDMA, GPUDirect Storage, and adaptive routing support. PCIe Gen4 x16 provides 256 Gb/s host bus bandwidth, matching the 200 Gb/s network throughput without bottleneck. The "-HDAT" suffix indicates: H = HDR, D = DE (dedicated), A = single-port, T = tall bracket.
Deployment & Use Cases
HPC supercomputing clusters requiring single-port HDR 200Gb/s InfiniBand per compute node. AI/ML GPU training clusters with GPUDirect RDMA for GPU-to-GPU communication across NVIDIA Quantum-2 HDR fabrics. Scientific simulation and molecular dynamics environments requiring sub-microsecond RDMA latency. Quantum HDR InfiniBand fabrics where single-port connectivity per node is sufficient.
Technical Specifications
- OEM: NVIDIA Mellanox
- Part Number: MCX683105AN-HDAT
- NVIDIA P/N: 900-9X0BC-001H-ST1
- ASIC: ConnectX-6 DE
- Speed: HDR InfiniBand 200Gb/s
- Ports: 1x QSFP56
- Host Interface: PCIe 4.0 x16
- Bracket: Tall (Full Height)
- Crypto: Disabled (No-Crypto variant)
- Form Factor: Single-slot HHHL
- Condition: NEW
Compatibility & Hard Constraints
InfiniBand Only: This is NOT a VPI adapter. It does not support Ethernet mode. For Ethernet + InfiniBand VPI, use MCX653105A or MCX653106A series. No-Crypto: Hardware encryption is disabled. For crypto-enabled variant, a different part number is required. PCIe 4.0 x16 Required: Physical x16 slot required. PCIe 3.0 compatible but at reduced host bandwidth (128 Gb/s vs 256 Gb/s). Tall Bracket Only: Ships with tall bracket. Low-profile bracket must be sourced separately. Single-Port: For dual-port HDR, use MCX683106AN series. QSFP56 Only: Requires QSFP56 HDR InfiniBand optics or DACs. Not compatible with QSFP-DD 400G connectors. Predecessor: ConnectX-5 EDR (MCX556A). Successor: ConnectX-7 NDR (MCX75310AAS).
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS validates every adapter for full PCIe link training, port initialization, and RDMA functionality before shipment. Technical consultation available for fabric design and adapter selection. Global shipping with tracking. 1–3 business day handling.