PCI adapter provides an option for desktop PC users to optimize wireless LAN connectivity. The Asus WL-138G, IEEE802.11g/b PCI card ready to run in any PCI-equipped desktop PC. With WL-138G Wireless LAN PCI card, users may easily upgrade their desktop PCs become WLAN client station, and keeping you on the network without restriction. PCI bus power management interface specification 1.0 compliant, IEEE 802.11g/b standard for 2.4 GHz Wireless LAN, 64/128 bit WEP encryption, support WPA, PCI local bus specification Revision 2.2 compliant, Reverse connector with a detachable antenna, Host interface: PCI BUS, Management Interface: Network Standard IEEE 802.11g/b, Data Rate: 802.11g: 6, 9, 12, 18, 24, 36, 48, 54Mbps, 802.11b: 1, 2, 5.5, 11Mbps, Modulation CCK (11Mbps, 5.5Mbps), DQPSK (2Mbps), DBPSK (1Mbps).OFDM, Technology Direct Sequence Spread Spectrum, Supplied with Quick Start Guide and Driver CD.