Etekcity Mini Smallest 150Mbps USB Wireless LAN Network Adapter with Smart 2dBi Internal Antenna, High Power Gain Dongle with 802.11 B/G/N signals, 2.4 GHz frequency for Windows, Linux, & Mac PCs, Computers, Notebooks, Laptops, and Desktops, Realtek RTL8188CUS Chipset Built in 2dBi smart antenna for stronger signal, better stability and coverage USB 2.0/1.1 interface; Smallest network adapter; easy installation Supports WEP/WPA/WPA2 Security Protocols Compatible with 802.11 B/G/N Router; Frequency Band: 2.4GHz Realtek RTL8188CUS Chipset