GSKY High Power 500mW 27dBm 802.11b/g USB Wireless WiFi LAN Adapter With Bonus Screw-On Swivel 9dBi Rubber Antenna 5 dBi dipole Rubber Duck Antenna and 15" +9dBi Rubber Duck Antenna Included 802.11b/g 500mW of power which is more powerful than any other WiFi adapter on the market Drivers included on CD Constant and stable performance User-friendly and easy installation. Supports Windows Macintosh and Linux