rather than standard Bluetooth adapters. This is because the chip often functions as a sound card that receives audio wirelessly, bypassing the need for a standard Bluetooth stack on the PC. Driver Specifications and Compatibility
Uncheck the box that says . Click OK to save changes. Conclusion
The most frequently cited source among users is a driver file shared on the forum. According to multiple forum threads, the driver was uploaded directly from the manufacturer’s original installation disk and has been scanned for viruses. Jieli Ac4100 Bluetooth Driver
The driver for the AC4100 is usually customized by the company that made the dongle (e.g., UGREEN, generic brands).
Sometimes the driver is perfectly fine, but the underlying Windows background service responsible for managing Bluetooth connections has stalled. Press to open the Run dialog box. Type services.msc and hit Enter . Scroll down and locate Bluetooth Support Service . Right-click it and select Properties . Change the Startup type to Automatic . If the service status is stopped, click the Start button. Click Apply and then OK . Fix 3: Prevent Windows from Powering Off the Device rather than standard Bluetooth adapters
Before we proceed, let us look at the raw specs of this legendary chip, as confirmed by Jieli’s own award documentation, to understand its capabilities:
Flaky pairing or frequent disconnects: Often caused by RF interference, but equally often the result of conservative reconnection logic or poor power-saving aggressiveness in firmware. Quick fixes: update the accessory firmware if the vendor provides one; remove old pairings from the phone and pair fresh; test with a different phone to isolate whether the accessory or host is the issue. Click OK to save changes
Features built-in digital-to-analog converters for direct audio output.