NVIDIA Mellanox ConnectX-6 MCX623405AC-CDAN OCP2.0
1-Port 100GbE OCP 2.0 Adapter with Secure Boot & Crypto
Host Interface
PCIe 4.0 x16
Port Count
1-port
Port Speed & Connector Type
100GbE, QSFP56
Network Protocol / RDMA
Ethernet only (ConnectX-6 Dx EN); RDMA over Converged Ethernet (RoCE v2)
Secure Boot
✔ Supported (hardware root of trust)
Product Description
The NVIDIA Mellanox ConnectX-6 Dx MCX623405AC-CDAN is a 1-port 100GbE OCP 2.0 mezzanine-form adapter built for high-density, security-conscious server and hyperscale deployments. Based on the ConnectX-6 Dx (MT28928A0-XCCF-CE) controller, it connects through a PCIe 4.0 x16 host interface to a single 100Gb/s QSFP56 port, delivering RDMA over Converged Ethernet (RoCEv2) for low-latency, CPU-efficient networking. The card ships with hardware-enforced Secure Boot and an inline Crypto engine for IPsec/TLS offload, protecting firmware integrity and offloading encryption from the host CPU — a strong fit for regulated cloud, financial and government workloads. Its OCP 2.0 mezzanine format saves front-panel space and simplifies cabling in dense rack-scale servers. Combined with SR-IOV, overlay-network offloads and ASAP²-class virtual switch acceleration shared with the broader ConnectX-6 Dx family, the MCX623405AC-CDAN gives hyperscale and enterprise data centers a compact, secure, high-throughput 100GbE building block.