. The Tenda W311MI is an 802.11n compliant wireless USB (Universal Serial Bus) Adapter that provides up to 4x faster wireless speeds & 3x better wireless reception over 802.11g products while staying backward compatible with 802.11g/b devices. This wireless adapter features a sleek compact design that fits into your computer's USB (Universal Serial Bus) port with minimal protrusion making it ideal to be used when traveling or in a crowded workspace The W311MI connects your desktop or notebook computer with an available USB (Universal Serial Bus) port to your wireless network for Internet access & file sharing. Desktop users can easily add wireless connectivity without having to open the PC case. Laptop users can easily upgrade to the latest 802.11n & get better range. It is ideal for email web browsing & file sharing in the home..