The Jieli BR21 is a plug-and-play, driver-free chip for standard audio. If you’re being asked to install a driver, you’re likely dealing with a vendor’s optional “audio enhancement” tool, not a requirement for basic functionality.
Most of those downloads are either:
, which provides SDKs for developers but does not typically offer direct "free" consumer driver downloads. Troubleshooting & "Driver" Solutions jieli br21 driver free