chip rather than a standard Bluetooth dongle that requires specific manufacturer drivers. Because it often identifies as a USB Composite Device USB Sound Card
: These require the "Borofone BR21" or generic Bluetooth stack drivers to enable the Windows Bluetooth toggle. Direct Driver Download Links jieli br21 driver link
Microsoft maintains a massive database of certified drivers, including those for JieLi hardware. chip rather than a standard Bluetooth dongle that
: Users often report these devices showing up as "Storage Devices" or generic audio units because they are designed to transmit/receive audio streams via the built-in USB-audio driver rather than acting as a full Bluetooth stack for the PC. Update Tools : For developers or those needing to flash the chip, the Jieli USB Dongle 4.0 Update Tool is the official way to interface with BR21 series hardware. Ask Ubuntu Troubleshooting & Resources : Users often report these devices showing up
A: This is common for cheap Jieli dongles. It is a "storage mode" used to hold the drivers. Check the device files for a setup.exe .