NVIDIA Mellanox ConnectX-6 Dx MCX623105AE-VDAT

The NVIDIA Mellanox ConnectX-6 Dx EN adapter (MCX623105AE-VDAT) is a single-port 200GbE card on a PCIe 4.0 x16 host interface, positioned as the encryption-focused SKU in the ConnectX-6 Dx 200GbE lineup. It adds inline hardware Crypto offload for IPsec and TLS, moving the encrypt/decrypt workload for network traffic off the host CPU and into the NIC's dedicated crypto engine, while omitting the Secure Boot firmware-attestation feature found on the AC variant. Alongside Crypto offload, the card provides RDMA over Converged Ethernet (RoCE v2), ASAP^2 hardware-accelerated virtual switching, and SR-IOV I/O virtualization, all built on the cloud-optimized ConnectX-6 Dx ASIC. This combination suits deployments that need wire-speed encrypted networking — such as regulated cloud tenants, VPN gateways, or secure storage links — without necessarily requiring hardware root-of-trust firmware validation, giving IT teams a way to offload IPsec/TLS at 200Gb line rate while keeping host CPU cycles available for applications.