: Sometimes labeled as "PC-T7" or "USB Composite Device".
: Sites like DriverIdentifier host specific driver packages for devices using the BR21 Stereo chip, such as those from Borofone. Understanding Your Device jieli br21 driver link
: If the dongle appears as a mass storage device (like a thumb drive), it may be in "Update Mode" or requires a mode-switch. On Linux, tools like usb-modeswitch are often used to force it into the correct state. : Sometimes labeled as "PC-T7" or "USB Composite Device"
Finding the correct can be tricky because JieLi (ZhuHai Jieli Technology) often produces chips for "driverless" USB composite devices. These are frequently recognized by modern operating systems like Windows 10 and 11 as standard USB Audio or HID devices without needing third-party software. Direct Driver Resources On Linux, tools like usb-modeswitch are often used
: The official developer portal for JieLi is hosted on GitHub (Jieli-Tech) , where they provide update tools and documentation for various chip series including BR17, BR21, and BR22.
The Jieli BR21 is a low-cost, all-in-one Bluetooth chip often found in:
If your device isn't working automatically, use these resources to find the specific driver compatible with your hardware: