Pce ac55bt is a 802 11ac dual band 2x2 wi fi pci express adapter with speeds up to 867mbps and is 3x faster than 802 11n wi fi includes an dual mode bluetooth 4 0 and can connects to the newest ble product display your pc on the big screen hdtv wirelessly user can perform different functions simultaneously on their pc and tv extend the antenna to position where has better coverage and speed