NVIDIA Mellanox MCX623105AE-VDAT ConnectX-6 Dx EN Adapter, 200GbE, Single-Port QSFP56, Crypto Enabled, PCIe Gen4 x16, Tall Bracket: The MCX623105AE-VDAT is a single-port ConnectX-6 Dx EN (Ethernet-only) network adapter operating at up to 200GbE on one QSFP56 cage. This is a dedicated Ethernet NIC — it is not a VPI card, so it does not run InfiniBand. The -AE-VDAT crypto-enabled variant ships with the inline IPsec/TLS engine active. This is a refurbished unit, tested by T.E.S IT-SOLUTIONS.
Engineering Context
The card runs over a PCIe 4.0 x16 host interface, providing approximately 31.5 GB/s of usable host bandwidth — sufficient to fully saturate a 200GbE port without PCIe back-pressure. ConnectX-6 Dx silicon implements RDMA over Converged Ethernet v2 (RoCE v2), NVMe-oF target/initiator, GPUDirect RDMA, hardware-accelerated VXLAN/GENEVE/NVGRE encapsulation, OVS offload via ASAP² Direct, and Connection Tracking offload. The integrated crypto engine performs inline IPsec ESP and TLS 1.2/1.3 record encryption/decryption at line rate, offloading these from host CPU.
Deployment & Use Cases
Hyperscale and tenant-isolated cloud servers requiring inline IPsec for tenant-to-tenant or tenant-to-internet traffic; AI/ML training nodes on Spectrum Ethernet fabrics; NVMe-oF storage initiators over RoCE v2; encrypted east-west traffic in financial and government data centers; bare-metal cloud nodes with line-rate TLS termination; and high-throughput firewall appliances using OVS/Linux ASAP² offloads.
Technical Specifications
- OEM: NVIDIA Mellanox
- Part Number: MCX623105AE-VDAT
- Product Family: ConnectX-6 Dx EN
- Ports: 1 × QSFP56
- Ethernet Speeds: 200GbE, 100GbE, 50GbE, 40GbE, 25GbE, 10GbE, 1GbE
- Maximum Per-Port Rate: 200Gb/s
- Host Interface: PCIe 4.0 x16 (PCIe 3.0 x16 compatible)
- Bracket: Tall / Full-Height
- Crypto: Enabled (inline IPsec + TLS 1.2/1.3)
- Secure Boot: Not supported on this SKU
- RoHS: Compliant
- Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Constraints
Compatible with NVIDIA Spectrum-2 (SN3000) and Spectrum-3 (SN4000) Ethernet switches at 200GbE. Supports QSFP56 PAM4 DACs, AOCs, and transceivers, and is mechanically backward compatible with QSFP28 100GbE optics and cables. Not compatible with OSFP or QSFP-DD cages. This is an Ethernet-only NIC — it does NOT run InfiniBand HDR; use a ConnectX-6 VPI card (e.g. MCX653-series) for IB workloads. Does NOT include Secure Boot — for both crypto and Secure Boot, the -VDAB or -VDAR variants are required. Requires MLNX_OFED or in-tree mlx5 driver; supported on Linux, Windows Server, and VMware ESXi.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS bench-tests every MCX623105AE-VDAT for 200GbE link training on the QSFP56 port, PCIe x16 negotiation, crypto engine functionality, firmware integrity, and thermal sensor health before shipment. Handling time is 1–3 business days. Visit our product page or tes-itsolutions.com for our full ConnectX-6 Dx inventory and integration consulting.
Frequently Asked Questions
What host interface does the MCX623105AE-VDAT have?
The MCX623105AE-VDAT host interface is PCIe 4.0 x16 (PCIe 3.0 x16 compatible), as listed in the specifications for MCX623105AE-VDAT.
What is the MCX623105AE-VDAT NOT compatible with?
This is a dedicated Ethernet NIC — it is not a VPI card, so it does not run InfiniBand. Confirm fitment against your platform before ordering MCX623105AE-VDAT.
What condition is the MCX623105AE-VDAT supplied in, and who sells it?
The MCX623105AE-VDAT is supplied in Refurbished condition by T.E.S IT-SOLUTIONS from EU stock, with 1-3 business day handling and worldwide B2B shipping. See https://www.tes-itsolutions.com/product-page/nvidia-mellanox-mcx623105ae-vdat-200gbe-ethernet-1-qsfp56-crypto-enabled.