10M/100M/1000M PCI Ethernet card,VIA VT6122 Gigabit chipset. Support 32-bit PCI Local Bus Master high-speed operation of Rev.2.1/2.2 specification. Plug-and-Play installation -- simply insert the card into a PC and it will automatically be configured by the PC BIOS One RJ-45 connector: Auto detection of 10Mbps Ethernet, 100Mbps Fast Ethernet and 1000Mbps Gigabit Ethernet & Auto MDI-X. Supports 10/100/1000Mbps Auto-negotiation operation. Supports Full-duplex mode doubles network data rate to 20/200/2000Mbps.