This has a stunning 2000mw output power. So if you are looking for a device to connect to an outdoor 2.4 GHz antenna, such as on a boat or an RV, this is a perfect solution. Because this is a USB adapter, it works on any computer that has a USB port. this also works with Windows Vista, Linux (kernel 2.6.6 and later) and Macintosh (OS version 10.4) It is perfect to travel with and weighing less than 2 ounces and measuring 3.5 x 2.5 inches in size (8.5 x 6.3cm) - 802.11b/g and "N", 2000mW of power which is more powerful than ANY other WiFi adapter on the market - Includes a 4inch 5dBi Screw-On Swivel Rubber Antenna and 7DdBi Panel antenna - Very Secure with wireless data encryption with 64/128-bit WEP, WPA, WPA2, TKIP,and AES - Compatible with IEEE 802.11n, 802.11b/g/n wireless standards - Supports driver for Windows 2000, XP 32/64, Vista 32/64, Windows 7, Linux (2.4.x/2.6.x),and Mac (10.4.x/10.5.x) * Wi-Fi Certified * Diagnostic LED indicator * 2.4GHz frequency band, MIMO (Multiple Input Multiple Output) * High speed transfer TX data rate up to 150 Mbps * Contains RP-SMA external antenna jack * High powered adapter- 2000mw output power * Compliant with FCC Part 15.247 for US, ETS 300 328 for Europe Important Driver Installation: If you get an error while Installing the Drivers press OK, then Exit. Then do the following: Right-click on your CD Drive and select Explore For Windows, double-Click on the application file in this folder (the file name atarts with "IS_AP_STA_RT2870......) then follow the installation instructions. For Mac and Linux open their folder and then run the application. Or you can got to the manufactures website, then click on "Support" and on the left side click on "Divers" and download.