Intel X520-SR2 E10G42BFSRBLK dual-port 10Gbps PCIe 2.0 x8 network card

Dual-port 10Gbps server adapter

The Intel X520-SR2 installs in a PCIe 2.0 x8 slot and presents two 10GBase-SR fibre ports. It targets administrators who need deterministic 10 Gb/s links for virtualised hosts, storage clusters or high-performance compute nodes. The plug-in card form factor fits standard low-profile brackets, so it suits dense rack chassis where full-height cards cannot be used.

Intel 82599ES controller with optical connectors

The onboard 82599ES controller handles both ports without host CPU overhead, and the SR optics accept multimode fibre with LC duplex connectors. Because the interface is optical, electromagnetic interference in crowded cabinets is eliminated and cable runs can extend well beyond copper limits. The low-profile bracket ships fitted, and a full-height bracket is included for tower chassis flexibility.

RoHS-compliant package with driver support

The boxed adapter meets RoHS environmental requirements and carries Intel driver support for current Linux and Windows Server kernels. No transceivers are bundled, so you select the exact SFP+ modules that match your fibre type and reach. Firmware updates are delivered through standard Intel update utilities, keeping the adapter current without a separate management console.