Alfa AWUS051NH v2 300Mbp/s USB WiFi Dongle - with detachable 2.4/5GHz RP-SMA antenna and dual band internal antenna, for improving WiFi range USB 2.0 / 3.0 Compatibility - Please note this is not backwards compatible with USB 1.1 Software Access Point Mode - allows WiFi distribution of the computers internet connection to other wireless devices Support For Latest Operating Systems - Driver support for Windows 7, Vista and XP,Mac OS X 10.4/10.5/10.6 and Linux 2.4/2.6 Supports Wireless Data Encryption - 64/128 bit WEP, WPA, WPA2, TKIP, and AES