Buffalo Wireless-A&G MIMO Performance USB 2.0 Adapter. Connectivity technology: Wireless, Host interface: USB. Data transfer rate (max): 54 Mbit/s. Compatibility: PC&Notebook. Security algorithms supported: WPA-PSK (AES, TKIP), 128/64-bit WEP. Dimensions (WxDxH): 71 x 23 x 114 mm, Compatible operating systems: Windows 2000, XP, Me, 98SE