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.Apply the latest Bluetooth 5.4 technology, the signal is more stable, the transmission speed is faster, and the delay is lower.
5.Enhanced Data Rata (EDR) and transmission rate up to 5Mbps.
Supports dual-mode Bluetooth 5.4 with low power consumption (BLE).
6.Bluetooth USB antenna with high gain can rotate 90° vertically and 180° horizontally to get a better signal and maintain a stable Bluetooth connection
It is not recommended to use:
*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 data rate (EDR) support, the data transfer rate of Bluetooth technology has been greatly improved, reaching 5Mbps. 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, giving you a smooth experience without lag problems
Use the 360-degree rotatable high-gain external antenna to provide stronger signal transmission and reception from any angle.
The computer is connected to a Bluetooth or stereo headset, so you can put aside the headset's wired mount and enjoy the songs infinitely more freely.
Simultaneously transmit Audio 2 Bluetooth headphones while watching TV, movies or playing games without lip-sync delay.
A sleek, ultra-small design means you can plug the nano receiver into any USB port and forget about it to use its features
The latest Bluetooth 5.4 version enables connectivity over long distances up to 150m in open space.
For Windows laptops or desktop computers. The USB Bluetooth dongle makes your computer Bluetooth-enabled, allowing you to wirelessly connect to a variety of different Bluetooth devices. Or you can use the adapter to enhance your Bluetooth 5.4 experience!
Note: IOS does not support data transfer, 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 stereos, 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
Range of application: Class II, up to 150 meters
Audio codec support - SBC
Bluetooth Profiles - A2DP, AVRCP
Product size - 12.8 cm x 4.6cm x 1.2 cm