Extends Range of Wireless Router or Gateway,Provides Security Through Encryption Using WPA/ WPA2/ WEP,Wall Plug Design for Convenient Placement. Frequency range 2.412-2.4835 GHz, wireless power 15-18dBm , Antenna 5dBix2, Power 100v-240v AC. Operating system : Windows 7, Windows Vista, Windows XP, Windows 2000, Mac OS, UNIX, Linuxoperating conditions : 0-40 degrees C