Windows aggressively cuts power to USB ports to save energy, which can cause the Jieli AC4100 chip to crash.
Once the driver is working, you can use Jieli’s proprietary tools (not included with the driver – must be downloaded separately):
Select from the dropdown. If you see USB\VID_1AB1 or similar vendor IDs linked to Jieli Technology, your device uses this chipset.
Typically supporting Bluetooth 4.2 or Bluetooth 5.0 protocols.
Go to Bluetooth settings, remove the device, and pair it again from scratch. Final Notes
Features built-in digital-to-analog converters for direct audio output.
To summarize:
Because Jieli is a components manufacturer, they do not always provide a user-friendly public download site for drivers. Instead, drivers are often provided by the companies that use the chip in their products.
Avoid third-party "driver updater" tools. They frequently misidentify generic Jieli chips and install incorrect, unstable firmware.
Compatibility with both classic Bluetooth and Bluetooth Low Energy (BLE).
Since Jieli does not host drivers for end-users on their website (they supply chips to manufacturers, not consumers), finding the driver can be tricky.
The Jieli AC4100 Bluetooth driver is the essential link between your affordable audio gear and your PC. While finding the specific file can be a bit of a treasure hunt due to the generic nature of the chipset, using the Hardware ID method or checking Windows Optional Updates usually solves the problem. With the right driver, you can enjoy seamless wireless audio without the frustration of connection drops.
