Esamconn&reg; 300M Wireless USB Adapter Wifi Dongle WLAN Network Card Mini Portable For Computer,Notebook etc. Add 802.11n Wireless USB Adapter connectivity at up to 300 Mbps in an incredibly small package. Perfect to upgrade an old computer or bypass a broken wireless card. USB 2.0 Hi-speed connector, wireless transmission speed is up to 300Mbps Fully compatible with 802.11b/g/n devices and CSMA/CA with ACK Supports Security WPA-PSK, WPA2-PSK, WPS compatible IEEE 802.1X; Support operation system: Windows 2000/XP/Vista/WIN7/8;Linux &Mac 10.8 (But currently CD driver Does NOT work with Win 10 &Mac 10.9/10.11)