Jieli Br21 Driver Link -

Jieli BR21 is a common Bluetooth chipset often found in budget USB dongles, microphones, and sound cards. It is frequently misidentified by operating systems as a storage device or a generic USB sound card rather than a Bluetooth adapter. Ask Ubuntu Driver Identification and Download

DriverDouble: Provides a version (v4.2.8, 0.81 MB) specifically listed for the JieLi BR21. jieli br21 driver link

Jieli BR21 (often appearing as part of the BR17/BR21 series) is typically not a standard Bluetooth dongle requiring a dedicated Bluetooth driver; rather, it functions as a USB Composite Device USB Sound Card that uses generic system drivers. Ask Ubuntu Understanding the Driver Situation Plug-and-Play Nature Jieli BR21 is a common Bluetooth chipset often

Without the correct driver: