WARM TIPS1. If there is built-in or 3rd Bluetooth into the PC, please be sure to disable all existing Bluetooth devices in "Device Manager" at first, then insert the adapter and try again. 2. If you have any question about the driver installation or product usage, you can contact our reliable customer service via Amazon Message or refer to the user manual included in the product for help.IMPORTANT NOTES1. It cant be compatible with PS3, PS4, PS5, Switch, or Xbox Console; but it works with Game Controllers for PC. 2. It's not compatible with TV, Car or Mac OS devices. 3. The transmission range will be affected by physical obstructions, wireless interference and the wall.MULTI-DEVICES SATBLE CONNECTIONWith the upgraded Bluetooth 5.4 technology, supports up to 7 different types of devices to be connected and can work together at the same time without interfering with each other, Which means that you can listen to high-quality music while using the keyboard mouse or other devices. Faster Speed, More Stable!EXTEND LONG RANGEUtilizing Class 1 Bluetooth technology and designed with dual antennas, BT11 Bluetooth transmitter receiver adapter can achieve a range of up to 492ft (150m) line-of-sight in open air and up to 164-328ft (50-100m) indoors. *NOTE: Operation range can be affected by Wi-Fi routers, Wireless TV adapters, physical obstructions like walls, metal obstacles etc. and also depended on Bluetooth receiving device.NO LIP SYNC DELAY & SUPERIOR AUDIOBT11 Bluetooth Dongle for PC/Laptop to pair with Bluetooth headphones or speakers for superior stereo music wireless streaming. Also, you have the ability to take Skype online calls using your headset mic and use the USB adapter to transfer data files to / from mobile phones / tablets. Do as you please, be free and unrestrained.