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Green circuit board with silver bracket and two SFP28 ports

Mellanox Technologies

Mellanox MCX621102AN-ADAT ConnectX-6 25GbE 2-Port SFP28 network card

SKU CH-XPHS-SH3B8

Adds dual 25 GbE SFP28 ports over PCIe 4.0 for high-throughput server networking

  • Dual 25GbE ports for high-throughput networking
  • PCIe 4.0 interface enables faster host connectivity
  • Two SFP28 cages support flexible fibre or copper links
  • ConnectX-6 controller offloads packet processing from the CPU
  • New condition ensures full manufacturer specification compliance

Dual-port 25GbE adapter

The Mellanox ConnectX-6 card delivers two SFP28 ports running at 25GbE for servers and workstations that need high-throughput wired connectivity. It plugs into a PCIe 4.0 slot and is sold new.

Check slot and transceiver stock

Verify that your motherboard has a free PCIe 4.0 slot with enough lane width for the adapter. You will also need two SFP28 transceivers and matching fibre or direct-attach cables, which are not included.

Frees onboard ports for other traffic

By moving 25GbE traffic onto a dedicated add-in card, the onboard network interfaces remain available for management or lower-speed networks. The PCIe 4.0 interface provides the bandwidth headroom the dual ports require.

Highlights

  • Dual 25GbE ports for high-throughput networking
  • PCIe 4.0 interface enables faster host connectivity
  • Two SFP28 cages support flexible fibre or copper links
  • ConnectX-6 controller offloads packet processing from the CPU
  • New condition ensures full manufacturer specification compliance

Specifications

No published specifications for this item yet.

Questions about this item

Does the MCX621102AN-ADAT include SFP28 transceivers or cables, or must they be purchased separately?

The adapter provides two SFP28 cages only; compatible transceivers or direct-attach cables must be sourced separately.

The part number ends in 621102 — does this indicate a different port count or speed grade from other ConnectX-6 models?

The 621102 suffix identifies the dual-port 25 GbE variant; other suffixes denote different port counts or speed grades.

With a PCIe 4.0 x8 host interface, what practical throughput can each 25 GbE port sustain in a server?

Each port can sustain line-rate 25 Gb/s in both directions simultaneously when the host system supports PCIe 4.0 x8.

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