Intel® 82571EB Quad Gigabit PCIe NIC Card ( Silicom PEG4IL )

The host processing offloads accelerators frees CPU for application processing. The performance is optimized so that system I/O is not the bottleneck in high-performance networking applications. - Independently copper Gigabit Ethernet channels support six, four, two and one Gigabit Ethernet (1000Base-T), Fast Ethernet (100Base-Tx) and Ethernet (10Base-T).

eBay