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Green printed circuit board with a silver SFP+ cage and gold PCIe edge connector, full-height metal bracket attached

Graviton

Graviton MCX311A-XCAT 10GbE SFP+ PCIe NIC Server Adapter

SKU CH-N99S-RPFVM

Adds a single 10 GbE SFP+ port via PCIe, supplied with both full-height and low-profile brackets for server installation

  • 10 GbE connectivity for high-speed server networking
  • ConnectX-3 EN controller handles Ethernet traffic efficiently
  • SFP+ LC/APC multimode interface for fibre deployments
  • PCI Express form factor fits standard server slots
  • Includes full-profile and low-profile brackets for flexible installation

ConnectX-3 EN 10GbE SFP+ Adapter

The Graviton MCX311A-XCAT is a single-port 10GbE SFP+ PCIe network interface card built on the Mellanox ConnectX-3 EN controller. It targets servers and workstations that need a straightforward 10-gigabit Ethernet uplink over multimode fibre with LC/APC connectors. The card ships with both full-profile and low-profile brackets for flexible chassis fitment. It is validated for Windows 7 and Windows 11 environments.

Capacity and headroom

The adapter delivers a single 10GbE lane, suitable for storage replication, backup windows and virtual-motion traffic that fits within ten gigabits per second. Workloads that sustain line rate on multiple concurrent streams will saturate the port and require additional adapters or a higher-speed model. The ConnectX-3 engine offloads TCP/IP and iSCSI processing, preserving CPU cycles for the application layer.

Thermals noise and power

Operating temperature is rated from 0 to 70 degrees Celsius, indicating standard server-grade thermal tolerance. The half-height PCB and passive heatsink rely on chassis airflow; no onboard fan is present, so acoustic output is negligible. Typical power draw remains within the PCIe slot budget for a single-port 10GbE controller, leaving ample headroom for dense multi-card deployments.

How it compares

Measured against everything we stock in Tech Gadgets & Accessories, at today’s prices. Recalculated every night.

Price $37.99
Pricier than about 70% of the 5,998 comparable items (median $24.99).

Specifications

No published specifications for this item yet.

Questions about this item

Will this MCX311A-XCAT ConnectX-3 card run in my Windows 7 workstation alongside older PCIe cards?

The adapter is confirmed to operate under Windows 7 and Windows 11, so it will coexist with legacy PCIe devices in the same system.

How can I verify the 10GbE SFP+ link is active after installing the MCX311A-XCAT?

Check the port LEDs on the bracket; a solid green light indicates a live 10GbE connection once the driver loads.

Does the MCX311A-XCAT package include both full-height and low-profile brackets, or must I buy a bracket separately?

The box contains the card plus both full-profile and short brackets, so no extra bracket purchase is required.

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