Monoprice Dual-Band 80211AC 600Mbps USB 20 Wi-Fi Adapter with Antenna (112816) Supports the wireless 802.11AC standard Supports transmitting over 2.4G and 5G frequencies simultaneously Backward compatible with wireless 802.11 a/b/g/n/ac network hardware Reduced interference and lag with Dual band connectivity during HD streaming, gaming, and video conferencing Maximum transmission speed of up to 433Mbps over 5.0GHz and 150Mbps over 2.4GHz frequencies Setup wireless security and encryption easily with the WPS button Supports Mac OS X 10.6.8 or above and Windows XP / 7 / 8 (32 & 64 bit) Adapter includes a 5 dBi external antenna