If you have recently purchased a Bluetooth adapter, a USB sound card, or a DIY Bluetooth receiver module, chances are high that it is built around the chip. This highly integrated Bluetooth audio SoC (System on Chip) is popular for its low cost, stable A2DP (music streaming) support, and HFP (hands-free calling) capabilities.
The BR21 chip creates two audio profiles: (High quality) and Hands-Free (Low quality, but allows mic use). jieli br21 driver link
JieLi is a Business-to-Business (B2B) manufacturer. They sell chips to third-party factories who build the final consumer products. Because of this business model: JieLi does not maintain a public consumer download portal. If you have recently purchased a Bluetooth adapter,
: The BR21 is part of the Jieli AC69 series, which are low-cost all-in-one Bluetooth chips. Common Use JieLi is a Business-to-Business (B2B) manufacturer
Jieli Technology (often spelled Jerry or Zhuhai Jieli Technology) is a massive Chinese semiconductor company. They specialize in ultra-low-cost Bluetooth and multimedia processors. The is widely integrated into:
: If the device is detected as storage instead of audio, you may need to use usb-modeswitch to force it into the correct mode. Driver Download Links
⚡ If Windows refuses to install the driver because it is unsigned, you may need to temporarily disable "Driver Signature Enforcement" in your Windows Recovery settings.