Intel E10G42BFSRG1P5 X520-SR2 10Gbps 2x RJ45 PCIe 2.0 x8 network card

Intel X520-SR2 10Gbps dual-port adapter

The Intel X520-SR2 is a PCI Express 2.0 x8 network adapter delivering two 10Gbps RJ45 ports. It is built around the Intel 82599 controller for server and workstation environments that need reliable 10 Gigabit Ethernet connectivity. The card fits a standard x8 slot and ships in OEM packaging.

Suited for servers adding 10GbE over copper

This adapter suits administrators upgrading rackmount or tower servers to 10GbE using existing Cat6a or Cat7 cabling. It is not for builds that require SFP+ fibre ports, single-port density, or a newer PCIe generation than 2.0. Buyers needing more than two ports or a different form factor should look elsewhere.

Sustained throughput with the 82599 controller

Under continuous load the 82599 controller maintains line-rate 10Gbps on both ports without throttling. Hardware offloads for TCP/IP, iSCSI and FCoE reduce CPU utilisation during long transfers. The PCIe 2.0 x8 interface provides enough bandwidth for dual-port saturation in typical storage and virtualisation workloads.