The listing, USB WIFI Wireless Adapter w/ Antenna 802.11N 150Mbps New in Pack has ended.
This is a brand new USB wifi adapter for Desktop computers and laptops (if you don't mind the small antenna). It comes with the driver installation CD and works with Windows XP, Vista, 7 (and Windows 8 I think but it's not listed) as well Mac OS X and Linux. This will allow the computer to recieve wifi internet from a wireless router nearby just like a laptop or any mobile device could without plugging in an ethernet cable to it. The antenna increases the range as it can pick up. It is USB 2.0 and 150Mbps 802.11N . Shipping is free to the United States and feel free to ask any questions. Thanks for looking!