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Green printed circuit board with silver PCIe connector and single SFP cage

Mellanox Technologies

Mellanox Technologies MCX4111A-ACAT 25GbE network card

SKU CH-8KP6-XQE27 MPN MCX4111A-ACAT

Single-port 25GbE adapter with PCIe 3.0 x8 host interface and SFP optical slot

  • Weight0.35
  • Single-port 25 GbE connectivity for high-speed server links
  • PCI Express 3.0 x8 host interface delivers ample throughput
  • SFP cage accepts optical fibre transceivers for flexible reach
  • Plug-in card form factor fits standard expansion slots
  • RoHS-6 certified and WEEE compliant for greener deployment

Single-port 25GbE adapter

The Mellanox ConnectX-4 MCX4111A-ACAT is a single-port 25 Gigabit Ethernet network card that installs in a PCI Express 3.0 x8 slot. It uses an SFP cage for optical fibre connectivity and is built in a standard plug-in card form factor. The unit meets RoHS-6 and WEEE environmental standards.

Optical-fibre 25GbE deployments

This adapter suits servers and workstations that need a single 25GbE link over optical fibre and have an available PCIe 3.0 x8 slot. It will not serve environments that require a different media interface or additional ports, so buyers needing those configurations should look elsewhere.

PCI Express 3.0 x8 host interface

The card connects to the host through a PCI Express 3.0 x8 interface, which determines whether it fits the target system. Verify that the motherboard or riser provides this exact slot type before purchase.

Highlights

  • Single-port 25 GbE connectivity for high-speed server links
  • PCI Express 3.0 x8 host interface delivers ample throughput
  • SFP cage accepts optical fibre transceivers for flexible reach
  • Plug-in card form factor fits standard expansion slots
  • RoHS-6 certified and WEEE compliant for greener deployment

Specifications

BrandMellanox
Weight0.35
Shipping weight9.07 kg
Package size221 × 168 × 53 mm

Questions about this item

How much power does the 25 GbE card draw under sustained load?

The ConnectX-4 adapter plugs into a PCI Express 3.0 x8 slot and draws whatever power that slot can supply, staying within standard limits for a single-port 25 GbE card.

What cabling and transceiver does the SFP port require?

The single SFP cage accepts standard 25 GbE optical transceivers and matching fibre patch cables, which must be purchased separately.

Will the PCIe 3.0 x8 card work in an older PCIe 2.0 server?

Yes, it will negotiate down to PCIe 2.0 x8 speeds, reducing maximum throughput but keeping the link operational.

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