NVIDIA Mellanox ConnectX-5 MCX516A-CCAT
ConnectX-5 EN dual-port 100GbE PCIe 3.0 adapter
Host Interface
PCIe 3.0 x16
Port Count
2-port
Port Speed & Connector Type
100GbE, QSFP28
RDMA / Network Protocol
RoCE v2
Secure Boot / Crypto / Multi-Host / SR-IOV
Not specified in product datasheet (standard ConnectX-5 EN silicon features may apply; confirm with firmware)
Product Description
The NVIDIA Mellanox MCX516A-CCAT is a dual-port 100 Gigabit Ethernet network adapter from the ConnectX-5 EN family, built on the MT27808A0-FCCF-EV controller and connecting to the host over a PCIe 3.0 x16 interface. Offering two independent QSFP28 100GbE ports, it provides redundancy and aggregate bandwidth for servers that need dual network paths for high availability or load balancing. Hardware-accelerated RoCE v2 RDMA delivers low-latency, low-CPU-overhead data movement, making the card well suited to NVMe-oF storage targets, cloud infrastructure, and HPC compute nodes. As one of the most widely deployed dual-port SKUs in the ConnectX-5 generation, the MCX516A-CCAT combines mature, field-proven silicon with broad ecosystem and driver support across mainstream operating systems and hypervisors, making it a dependable choice for standard 100GbE data center deployments.