Holiday Shipping Details & Extended Holiday Returns 
1. System support: Win7,Win8.1, Win10, Win 11
2. Support profile: Serial Port, Object Push, File Transfer, LAN Access, Personal Area Network, Audio Geteway, Heatset HID, Keyboard, Mouse, HCRP (Printer Cable Replacement), Bluetooth Low Energy, PIM Sync Profile, A2DP, AVRCP, Bluetooth Low Energy
3. Supported devices: Bluetooth Headset/Bluetooth Keyboard/Bluetooth Mouse/Bluetooth Speaker/Mobile Phone/Printer/Computer
4. Use the latest Bluetooth 5.4 technology, the signal is more stable, the transmission speed is faster and the delay is lower.
Enhanced Data Rata (EDR) and transfer rate of up to 5 Mbps.
Supports dual mode Bluetooth 5.4 with low power consumption (BLE).
Use is not recommended:
*Bluetooth enabled TVs, speakers or car stereos cannot be activated.
*Does not support Mac or Linux operating systems;
*Does not work with keyboard/mouse accessories based on 2.4G wireless technology;
*Does not work with game consoles such as PS4, Nintendo Switch or Xbox.
The adapter uses the latest Bluetooth 5.4 + EDR adapter, Bluetooth low energy. With the improved support of data rate (EDR), the data transfer rate of Bluetooth technology has been significantly improved and reached 5 Mbps. It is backward compatible with Bluetooth2.1/3.0/4.0/4.2/5.1 dual mode Bluetooth transmission.
Bluetooth 5.4 has lower power consumption and faster and more stable transmission performance, which minimizes the delay of the device during Bluetooth connection and gives you a smooth experience without delay problems
The computer is connected to a Bluetooth or stereo headset, so you can put the wired holder of the headset aside and enjoy the songs infinitely freely.
A slim, ultra-small design means you can plug the nano receiver into any USB port and forget it to take advantage of its features
For Windows laptops or desktop computers. The USB Bluetooth dongle makes your computer Bluetooth enabled, allowing you to connect wirelessly to a variety of different Bluetooth devices. Or you can use the adapter to improve your experience with Bluetooth 5.4!
Note: IOS does not support data transmission, only audio
5.4 Bluetooth stick supports Windows 11/10/8.1 plug and play.
Windows 7 must install the driver manually. The enclosed CD can be downloaded.
Warm tips: Does not apply to Mac OS, Linux, car radios, Xbox, PS4 or TVs
If your computer has Bluetooth, please disable Bluetooth first (My Computer Manage Device Management Bluetooth Right click and click Disable Bluetooth).
Bluetooth version: 5.4 with EDR - data transfer rate up to 5 Mbps
Areas of use: Class II, up to 20 metres
Support for audio codecs - SBC
Bluetooth profiles - A2DP, AVRCP
Product size: 1.4 cm x 2.6 cm x 0.9 cm