ZyXEL ZyAIR G-200 802.11b/g USB Adapter: Features: Adapter for USB 2.0-compliant laptop and desktop. Data rate of up to 54Mbps, five times faster than 802.11b; good for delivering large files, MP3 and video media. Works with both IEEE 802.11b and 802.11g (both at 2.4 GHz), and offers the freedom of mobility. 64/128-bit WEP Encryption support ensure wireless data security. Wi-Fi Certificate to ensure interoperability. WHQL Certificate to ensure compatibility with Microsoft Windows.