AIR802 USB-ADG-3 Wireless WiFi USB Adapter (802.11 b/g with 5dBi Antenna) External and detachable 5 dBi antenna Driver Supports Windows 98, XP, Vista, Windows 7 and MAC (up to 10.4 only) + Linux USB 1.1 and 2.0 Compliant Doubles or More Signal Strength Over Internal Cards Supports all Encryption WEP, WPA, WPA2