NOTE: The item is compatible with windows 10/ 8.1 /8/7/XP. However on the box there is limited space so the manufacturer do not list all of the versions and just list the most recent versions of windowsBluetooth 4.0 ?C applies the latest Bluetooth 4.0 and it is backward compatible with Bluetooth V 3.0 / 2.1 / 2.0 / 1.1. Ub400 turns non-Bluetooth PC or laptop into Bluetooth-capable ( PS4 & XBox Controllers for PC Only )Plug & play or free driver ?C plug and play for Win 8 Win 8.1 and win 10. Supports Win7 XP (driver required for Win7 XP and could be downloaded from website free of charge). it is not compatible with Mac Linux TVNano-sized ?C a sleek ultra-small design means you can insert the Nano adapter into any USB port and simply keep it there no matter when you are traveling or at homeReliability ?C enable wireless communication with Bluetooth-enabled computers printers phones and headsets. Utilize Bluetooth low energy) technology for energy-saving wireless connectivity. Operating Temperature-0??~40?? (32?H ~104?H)Broad operation range ?C with a transmission distance of up to 65 ft you can enjoy lossless music via your Bluetooth headset without hovering around your computerKind reminder: UB400 is not compatible with Mac Linux TV. UB400 is for PC use only so PS4/Xbox controllers could be used on PC and is not to be used directly on Xbox/PS4. Two UB400 cannot pair with each other.