TP-LINK TL-WN721N is designed to provide a high-speed and unrivaled wireless performance for your computer. The WN721N allows fire Wireless N network transfers up to 150Mbps and gives you all the support and compatibility you will want for your desktop or laptop computer. Get a better Internet experience, such as downloading, gaming, video streaming and so on. This unit is fully backwards compatible with Wireless G (802.11g) and Wireless B (802.11b) networks. This wireless USB adapter is Windows 7, Vista, and XP Compatible.