HOTSO 300Mbps USB WiFi Lan Network Card IEEE 802.11b/g/n Antenna IEEE 802.11n, IEEE 802.11g, IEEE 802.11b standard Frequency Band 2.4-2.4835 GHz 20dBm (MAX EIRP) Wireless Transmit Power Operating System: Windows XP /Vista /Win7 /Win 8 /Win 8.1 /Mac OS /Linux