This Device is Specially Design for those Computer,Laptop Which Have no Wi Fi system So if you want to have Wi Fi System in Your OLD Computer,laptop then This Smart and mini USB Wirless Adapter is the main Solution of Your Problem . With this  handy device, you can get internet on all your old computers without wireless cards or extend the range of the computers that do have wireless cards. By simply plugging this device into a USB port on your computer or laptop and installing the driver, your internet range will  be better. It is perfect for at home or for getting a better connection at public areas if you are on the road or in a hotel. This device is also perfect for a poor connection speed at the office. Features1. Supports: Windows Xp/Vista/7/8, Linux , and MAC2. 150 Mbps transmission rate3. High security WEP 64/128, WPA/WPA2, WPA-PSK/WPA2-PSK4. Plug and Play on Windows 7/85. Supports Ad-Hoc and infrastructure modes: When setting up an Ad-Hoc connection on Windows 8 a CMD prompt will need to be used.6. Long-distance7. External antenna for extra range (5 DBI detachable antenna)8. Lightweight and portable9. Supports roaming technology10. USB 2.011. RTL 8188 Chipset12. Transmission Distance: 100m indoors/ 300m outdoors13. Build in antenna (2DBI internal antenna)14. Built with CCA technology to auto select a channel that is free of interferencePackage Included1x Etekcity® 802.11 B/N/G  wireless adapter dongle1x Driver CD