NOTE:Item requires a CD installation. If your devices does not have a disk drive please contact ?Onvian Customer Service?to receive the driver link. Bluetooth pc adapter work with up to 7 devices at the same time.Memory function, the first successful connection after the first time to turn on the computer again automatically connected.Any installation problems, please email us to let us help you solve the problem. We hope you can use Onvian Bluetooth Computer Network Adapters to start your wireless journey. Long range usb bluetooth adapter, built-in antenna to enhance the signal, expand the signal range to 100M/328FT, bluetooth antenna can be rotated 360 degrees, you can even use headphones a few rooms away through walls with no drops. (of course you need to know operation range can be affected by physical obstructions and wireless interference). This bluetooth audio adapter is free from wired, use the bluetooth function of the dongle to connect bluetooth headset speakers keyboard mouse and other devices to your desktop computer or laptop wirelessly.(NOT applicable to Mac, Linux, TV, car stereo. )When using this bluetooth dongle to transfer files, the internal smart chip enables transfer rates of up to 3Mbps, allowing you to transfer files in seconds. Plug and play bluetooth pc adapter works well with 32/64-bit Windows 11/10/8.1/8/7, enjoy the fun of wireless transfer anytime. (NOTE: Windows 7 NEED DRIVER INSTALLATION,please install the drivers on the CD ) .Not applicable for Mac OS, Linux, TV, Car Stereo. This Onvian usb bluetooth adapter applies 5.0 technology with low energy technology, which is a perfect bluetooth dongle to achieve haven't a build in bluetooth support for motherboard.The signal is more stable than mini adapters. Enjoy stereo sound quality when connecting music with this bluetooth audio adapter. It is backward compatible with Bluetooth 4.2/4.1/4.0.