BUFFALO WLI2-PCI-G54 Wireless LAN Adapter:The AirStation 54 Mbps* Wireless Desktop PCI Adapter offers a fast and flexible wireless solution for your desktop PC. With the AirStation One-Touch Secure System (AOSS) creating a secure wireless connection is now hassle-free! The low profile design of the PCI adapters can accommodate desktops with either a full size or low profile PCI slot. The 54 Mbps* Wireless Desktop PCI Adapter is interoperable with both Wi-Fi 802.11g and 802.11b devices. The detachable antenna can be replaced with an optional external AirStation 2.4 GHz antenna allowing flexible placement and extended range. Features: AOSS support (*AOSS Client Manager Required). Fast 54 Mbps* wireless data transfer speed. Antenna adapter included for optional external antenna. Low Profile PCI fits in any PCI Slot. WPA (TKIP, AES), 802.1x support (supplicant required). Support 64/128 bit WEP. Easy to install and setup.