The NVIDIA ConnectX-6 Dx 2-Port 100GbE QSFP28 OCP 3.0 Network Card (MCX623436AN-CDAB) is an enterprise-grade, ultra-low-latency network adapter built for high-performance data centers, AI workloads, cloud infrastructure, and storage networking. Powered by the NVIDIA (Mellanox) ConnectX-6 Dx controller, this adapter delivers industry-leading bandwidth, intelligent offloads, and advanced virtualization support over PCIe Gen 4.0.

Designed in an OCP 3.0 Advanced I/O Module (AIOM) form factor, the MCX623436AN-CDAB integrates seamlessly into modern OCP-compliant server platforms, enabling scalable dual-port 100Gb Ethernet connectivity for the most demanding workloads.

Key Specifications

• Manufacturer: NVIDIA (Mellanox)

• Model: MCX623436AN-CDAB

• Controller: NVIDIA ConnectX-6 Dx

• Form Factor: OCP 3.0 Advanced I/O Module (AIOM), 0.5U height

• Host Interface: PCI Express 4.0 x16

• Ports: 2 × QSFP28

• Maximum Data Rate: 100 Gbps per port

• Power Consumption: Up to ~23 W

• Dimensions: Approx. 76 mm × 115 mm (3.0" × 4.5")

• Operating / Storage Temperature: -40°C to 70°C

Advanced Networking & Offload Capabilities

• RDMA & Low Latency: Supports RoCE v1/v2, Zero-Touch RoCE, and RoCE over overlay networks for ultra-low-latency, high-throughput communication

• Virtualization Acceleration: Hardware offloads for VXLAN, NVGRE, Geneve, plus SR-IOV with up to 128 Virtual Functions (VFs)

• Storage Networking: Accelerates NVMe over Fabrics (NVMe-oF), iSER, NFS over RDMA, and SMB Direct, ideal for software-defined storage environments

Management, Boot & Security

• Remote Management: Supports NC-SI, MCTP over SMBus and PCIe, and PLDM for firmware management and monitoring

• Remote Boot Support: PXE, UEFI, iSCSI, and Ethernet-based boot options

• Security: Hardware Root of Trust with secure firmware authentication and update mechanisms (no onboard crypto acceleration)

Standards & Compatibility

• Standards Compliance: IEEE 802.3 compliant for 10GbE, 25GbE, 40GbE, 50GbE, and 100GbE

• Platform Compatibility: Designed for OCP 3.0-compliant enterprise and hyperscale servers

The NVIDIA ConnectX-6 Dx MCX623436AN-CDAB 100GbE OCP 3.0 Network Adapter is an ideal choice for organizations requiring extreme bandwidth, intelligent offloads, and deterministic low-latency networking for AI, HPC, cloud, and next-generation data-center deployments.