The COMCAST CF Wireless Adapter - 1200Mbps Transmission Rate as well as 2.4GHz and 5GHz Double Frequency.COMCAST CF.The COMCAST CF-912AC adopts a new generation 11AC wireless technology that supports dual wireless signals. The 2.4GHz wireless speed reaches up to 300Mbps (11N) and the 5.8GHz wireless speed can touch up to 867Mbps (11AC) with a transmission rate of 1200Mbps. The user can choose freely between one of the two available working bands according to the surroundings and end device situations to effectively avoid wireless interference and network congestion. Therefore making the wireless signals more stable and the wireless speed smoother. Supporting Windows XP， Vista， WIN7 and WIN8 systems you can use it at home in the office or wherever you go. It can be used in a variety of scenarios such as bring the web to your HDTV， online gaming， video chat and so on to make a more excellent experience. As this adapter supports WPSQSS (Quick Secure Setup) it means that it is easy for setting up a wireless secured connection between wireless router and client quickly.