Installing 802.11 n USB Wireless Network Wifi Adapter – Universal-Database.com
EDIMAX - Wireless Adapters - N150 - 150Mbps 11n Wi-Fi USB Adapter, Nano Size Lets You Plug it and Forget it, Ideal for Raspberry Pi / Pi2, Supports Windows, Mac OS, Linux
USB 2.0 Wireless 802.11n Driver Download Free For Windows