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Green circuit board with tall metal bracket and single QSFP56 port

Mellanox Technologies

Mellanox Technologies MCX623105AN-VDAT ConnectX-6 Dx 200Gbps QSFP56 PCIe 4.0 x16 network card

SKU CH-04SF-NXXFN MPN MCX623105AN-VDAT

A single-port 200 Gbps QSFP56 adapter with PCIe 4.0 x16 connectivity and no crypto offload

  • Speed200Gbps
  • Connectors1 x QSFP56
  • InterfacePCIe 4.0 x16
  • FeaturesConnectX-6 Dx EN adapter card, 200GbE , Single-port QSFP56,
  • 200 Gbps throughput for high-density workloads via single QSFP56 port
  • PCIe 4.0 x16 interface delivers low-latency host connectivity
  • ConnectX-6 Dx EN adapter supports 10, 25, 40, 50, 100 and 200 GbE speeds
  • Crypto disabled design simplifies export compliance and deployment
  • Tall bracket fits standard full-height server chassis

Single-port 200 GbE adapter for dense server

The Mellanox ConnectX-6 Dx MCX623105AN-VDAT is a single-port 200 Gbps network adapter built on a PCIe 4.0 x16 interface. It targets data-centre operators who need high-throughput connectivity in a single-slot form factor with a tall bracket.

PCIe 4.0 x16 lane budget

The card consumes a full x16 PCIe 4.0 link, so the host platform must expose that many lanes from the CPU or chipset. The sole QSFP56 port supports 10, 25, 40, 50, 100 and 200 GbE rates, but actual link distance and cable type depend on the transceiver or active optical cable chosen by the installer.

Replaces dual 100 GbE cards when port density

Sites running two 100 GbE adapters can consolidate to this single 200 GbE port, freeing a PCIe slot and reducing cable count. The upgrade is worthwhile when the switch fabric already carries 200 GbE and the application can saturate the higher rate; crypto-offload workloads are not supported because the adapter ships with crypto disabled.

Highlights

  • 200 Gbps throughput for high-density workloads via single QSFP56 port
  • PCIe 4.0 x16 interface delivers low-latency host connectivity
  • ConnectX-6 Dx EN adapter supports 10, 25, 40, 50, 100 and 200 GbE speeds
  • Crypto disabled design simplifies export compliance and deployment
  • Tall bracket fits standard full-height server chassis

Specifications

BrandMellanox
ModelMCX623105AN-VDAT
Speed200Gbps
Connectors1 x QSFP56
InterfacePCIe 4.0 x16
FeaturesConnectX-6 Dx EN adapter card, 200GbE , Single-port QSFP56, PCIe 4.0 x16, No Crypto, Tall Bracket
Shipping weight0.45 kg
Package size190 × 161 × 26 mm

Questions about this item

Should I choose the single-port QSFP56 version or look for a dual-port alternative?

This model provides one QSFP56 port at 200Gbps. If your cabling plan uses a single 200GbE link, the single-port card matches it exactly; a dual-port card would add a second port you would not use.

What does the 200Gbps rating mean once the card is installed in a PCIe 4.0 x16 slot?

The PCIe 4.0 x16 bus supplies enough bandwidth for full line-rate 200GbE traffic, so the adapter can sustain 200 Gbps throughput without bus bottleneck.

Which Ethernet speeds does the QSFP56 interface actually support in practice?

The port negotiates 10, 25, 40, 50, 100 or 200 GbE depending on the module and cable you insert, capping at the module's rated speed.

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