NVIDIA Mellanox ConnectX-6 MCX623432MN-ADAB OCP3.0

The NVIDIA Mellanox ConnectX-6 MCX623432MN-ADAB is a dual-port 25GbE OCP 3.0 small form factor adapter card built on the ConnectX-6 Dx Ethernet-only architecture. It uses an SFP56 cage that is physically compatible with standard SFP28 optics and DACs, giving system integrators flexibility in transceiver sourcing while supporting speeds up to 25Gb/s per port. The card includes NVIDIA's hardware-based host management capabilities, allowing out-of-band monitoring and control independent of host OS state — a key requirement for lights-out data center operations. This is a distributor-catalog part with limited published documentation from NVIDIA directly (no dedicated public datasheet at time of writing), though it is a fully supported, firmware-updatable SKU within the ConnectX-6 product family. As with other ConnectX-6 Dx cards, it provides hardware-accelerated RoCE v2, SR-IOV, and standard Ethernet offloads suited to enterprise and cloud server deployments.