10/100M PCI 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 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. Complies with PCI v2.1/v2.2 standards. Standards and Protocols : IEEE802.3, 802.3u, 802.3x CSMA/CD, TCP/IP, IPX. Port : 1 10/100Mbps RJ45 port. Network Media : 100Base-Tx. UTP category 5. Drivers for Windows 98/Me/NT4.0/2000/XP/Vista.