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Green PCB network card with dual SFP28 ports and gold PCIe fingers

NVIDIA

NVIDIA ConnectX-6 Lx MCX631102AN-ADAT network card PCIe 4.0 x8 25GbE SFP28 x2

SKU CH-RMCQ-BK1DH

Dual-port 25GbE SFP28 network adapter with PCIe 4.0 x8 interface

  • Product weight0.08
  • Dual 25GbE ports deliver high throughput
  • PCIe 4.0 x8 interface enables fast host connectivity
  • SFP28 connectors support flexible fibre or copper links
  • Multi-rate 10/25GbE operation fits varied network speeds

Dual-port 25GbE SFP28 adapter

The NVIDIA ConnectX-6 Lx MCX631102AN-ADAT is a PCIe 4.0 x8 network card with two SFP28 ports. It supports link speeds of 1, 10 and 25 GbE for servers and workstations that need high-throughput wired connectivity.

Interface width and port count decide fit

The card requires a PCIe 4.0 x8 slot and provides exactly two SFP28 cages. Systems limited to x4 electrical width or builds needing more than two 25GbE ports cannot use this adapter.

How it compares

Measured against everything we stock in Ethernet Cards & NICs, at today’s prices. Recalculated every night.

Price $407.99
Pricier than about 83% of the 1,505 comparable items (median $90.99).

Specifications

Product
Brand nameNvidia
Model name900-9 × 662-0053-ST1

Questions about this item

What does the 25 GbE rating mean when the card is installed in a server?

Each SFP28 port can carry up to 25 Gbps of Ethernet traffic, so the adapter delivers two independent 25 GbE links for high-throughput workloads.

How does the PCIe 4.0 x8 interface affect the maximum throughput of the two 25 GbE ports?

The x8 slot provides enough bandwidth to run both SFP28 ports at their full 25 Gbps line rate without bottlenecking the host bus.

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