Etekcity 4R Wireless WIFI LAN USB Network Adapter: This device is a High Power Dongle with 802.11 B/G/N signals, 300 Mbps transmission rate, 2.4 GHz frequency, great for Windows, Linux, MAC, PC, Computers, Notebooks, Laptops, and Desktops, built in RTL 8188 Chipset 300 Mbps transmission rate Built in USB / Compact and portable 802.11 b/g/n