Syba SD-PEX24009 Gigabit LAN Network NIC PCIe x1 Card Black A high performance 1000baset-t Ethernet controller card Backward compatible to 10/100baset-t networking Complies with PCI-Express Revision 1.1 10/100/1000Mbps data rate auto negotiation operation Fully compliant with IEEE 802.3, 802.3U, 802.3ab Realtek Chipset Drivers support Windows 7/Vista/XP/2000/ME/98SE/ 10/100/1000Mbps data rate auto negotiation operation