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Green printed circuit board with silver metal bracket and two SFP+ ports

Mellanox Technologies

Mellanox ConnectX-3 MCX312A-XCBT 10 Gbps 2-Port SFP+ network card

SKU CH-61YY-BTB45

Dual-port 10 Gbps SFP+ Ethernet adapter with PCI Express 3.0 x8 host interface

  • 10 Gbps throughput per port for fast data transfer
  • Dual SFP+ ports give flexible fibre or copper links
  • PCI Express 3.0 x8 host interface provides high bandwidth
  • Plug-in card form factor fits standard server slots
  • Mellanox ConnectX-3 controller handles 10GBase-X networking

Dual 10 Gbps SFP+ adapter

The Mellanox ConnectX-3 MCX312A-XCBT is a dual-port 10 Gbps Ethernet adapter that plugs into a PCI Express 3.0 x8 slot. It targets servers and workstations that need two independent SFP+ links for storage, clustering or high-throughput networking.

Sustained 10 Gbps throughput

The ConnectX-3 controller is built for continuous line-rate traffic across both ports without throttling under load. Hardware offloads for TCP/IP, iSCSI and virtualization keep CPU utilisation low during prolonged transfers.

Low-profile plug-in card

The low-profile bracket fits standard and dense chassis while the two SFP+ cages accept a range of direct-attach cables or transceiver modules. No external power connector is required, so installation is limited to the x8 slot itself.

Highlights

  • 10 Gbps throughput per port for fast data transfer
  • Dual SFP+ ports give flexible fibre or copper links
  • PCI Express 3.0 x8 host interface provides high bandwidth
  • Plug-in card form factor fits standard server slots
  • Mellanox ConnectX-3 controller handles 10GBase-X networking

Specifications

No published specifications for this item yet.

Questions about this item

How much power does the ConnectX-3 MCX312A-XCBT draw when both 10 Gbps ports run all day?

The card uses a PCI Express 3.0 x8 host interface and operates as a plug-in card without an external power connector, so power is supplied entirely by the slot.

What cabling and modules must I already own to use the two SFP+ ports?

Each port accepts standard SFP+ transceivers; you need two compatible SFP+ modules and matching fibre or direct-attach cables for the 10GBase-X links.

Will the PCIe 3.0 x8 interface work in my older PCIe 2.0 motherboard slot?

Yes, the ConnectX-3 is backward compatible and will negotiate down to PCIe 2.0 x8 or x4, still providing dual 10 Gbps throughput.

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