Technotech 10/100M PCI Express LAN Card is the perfect solution to replace your onboard ethernet port or to join multiple LAN/WAN networks combining your existing port or installing multiple PCI Express LAN Card. . Complies with IEEE 802.3, IEEE 802.3u standards . One 10/100Mbps auto-negotiation RJ45 port, supporting auto MDI/MDIX . Supports IEEE 802.3x flow control for full duplex mode and backpressure for half duplex mode . Standards and Protocols : IEEE802.3, 802.3u, 802.3x CSMA/CD, TCP/IP, IPX . Port : 1 10/100Mbps RJ45 port . Network Media : 100Base-Tx . Drivers for Windows 98/Me/NT4.0/2000/XP/Vista.