NVIDIA Mellanox ConnectX-6 Dx Dual-Port 100GbE PCIe 4.0 x16 OCP 3.0 Ethernet Network Adapter — MCX623436MS-CDAB

The NVIDIA Mellanox MCX623436MS-CDAB is the ConnectX-6 Dx dual-port 100GbE network adapter with PCIe 4.0 x16 host interface in an OCP 3.0 (Open Compute Project) form factor. Delivering 2x 100Gb/s with RoCE v2 and advanced security features, it provides high-bandwidth, low-latency Ethernet network connectivity for OCP 3.0 server platforms in AI/ML, cloud, and enterprise data center deployments.

Key Features

• 2x 100GbE ports — dual-port 100Gb/s Ethernet connectivity
• PCIe 4.0 x16 host interface
• OCP 3.0 form factor — Open Compute Project server compatible
• RoCE v2 for RDMA over Ethernet workloads
• Advanced security — AES-256 encryption, TLS 1.3 offload
• NVIDIA ASAP² — accelerated switching and packet processing

Product Specifications

• Part Number: MCX623436MS-CDAB
• Manufacturer: NVIDIA (Mellanox)
• OEM Status: Retail
• Model: ConnectX-6 Dx
• Ports: 2x 100GbE
• Host Interface: PCIe 4.0 x16
• Form Factor: OCP 3.0
• RDMA: RoCE v2

Interface Specifications

• Host Interface: PCIe 4.0 x16
• Network Ports: 2x 100GbE
• Form Factor: OCP 3.0 (mezzanine)
• Bandwidth: Up to 200Gb/s aggregate

Port Specifications

• Ports: 2x 100GbE
• Protocol: Ethernet (100GbE)
• RDMA: RoCE v2
• Security: AES-256, TLS 1.3 offload
• ASAP²: Supported

Use Cases

• OCP 3.0 server dual-port 100GbE network connectivity
• Cloud and hyperscale data center OCP platform networking
• AI/ML workloads requiring RoCE v2 RDMA over 100GbE
• Secure networking with hardware-accelerated encryption offload

Compatibility

• OCP 3.0 server platforms with PCIe 4.0 x16 mezzanine slot
• 100GbE optical transceivers and DAC cables
• Windows Server, Linux, and VMware ESXi with NVIDIA MLNX_OFED driver

Frequently Asked Questions

What is the difference between MCX623436MS-CDAB and MCX623436AN-CDAB?

Both are ConnectX-6 Dx dual-port 100GbE OCP 3.0 adapters. The MCX623436MS-CDAB and MCX623436AN-CDAB are variant part numbers for the same OCP 3.0 platform — differences may relate to specific OEM configurations or port connector types. Verify with your OCP server platform documentation before ordering.

What is OCP 3.0 form factor?

OCP 3.0 (Open Compute Project 3.0) is a mezzanine network adapter standard used in hyperscale and cloud server platforms. It connects via a dedicated OCP slot on the motherboard — not a standard PCIe slot — and is not compatible with standard PCIe servers.

The NVIDIA Mellanox MCX623436MS-CDAB ConnectX-6 Dx delivers dual-port 100GbE connectivity over PCIe 4.0 x16 in OCP 3.0 form factor — a high-performance network adapter for OCP server platforms in AI/ML, cloud, and enterprise data center deployments requiring 200Gb/s aggregate bandwidth with RoCE v2 RDMA.