Edimax EW-7722In 300Mbps 11n Wireless PCI adapter with 2 x 3dBi Detachable Antennas Built in hardware WPS button Increases wireless coverage for 5 times further Includes multi-language EZmax setup wizard Wi-Fi Certified so that you can be sure that it works with the rest of your Wi-Fi Certified wireless network or devices Full 802.11n speed of 300 Mbps when connected to a 802.11n network - it's the latest wireless technology for maximum range and coverage Backward compatible with 802.11b/g One of the few PCI adapters with hardware WPS switch so that you can easily setup wireless security Spec Standards IEEE 802.11n; backward compatible with 802.11b/g Wi-Fi Certified. Security 64/128 bit WEP Encryption and WPA-PSK, WPA2-PSK security, Cisco CCX & Hardware WPS. Port n.a. Internal PCI bus. Wireless Data Rates Up to 150 Mbps. Modulation OFDM: BPSK, QPSK, 16-QAM, 64-QAM, DSSS. Frequency Band 2.412 ~2.462GHz. Antenna Channels (FCC) 2.4GHz : 1~11. Power Input Computer bus power. Dimensions 5.0" x 1.7" x 0.1". Temperature 0 - 55 degree (32-131 degree F). Humidity 95% Non-Condensing. System Win2K/XP/Vista/Win7, Mac OSX 10.4~10.5, Linux