The Jieli AC4100 is a highly popular, low-cost system-on-a-chip (SoC) manufactured by JieLi Technology. It powers millions of budget-friendly Bluetooth devices worldwide, including wireless earbuds, portable speakers, car audio adapters, and USB dongles.
Right-click the problematic Jieli/Unknown device and choose . Select Browse my computer for drivers .
Manufactured by , these chips are ubiquitous in the "budget" electronics market. The AC4100 series typically integrates a RISC microcontroller, a Bluetooth/RF stack, and audio processing capabilities into a single package.
If you are struggling to get your Jieli AC4100 device recognized by your computer, this guide will walk you through everything you need to know about finding, installing, and fixing the driver. Understanding the Jieli AC4100 Chipset Jieli Ac4100 Bluetooth Driver
Microsoft maintains a massive catalog of generic Bluetooth drivers that work perfectly with the Jieli AC4100 architecture.
Navigate to (or Update & Security on Windows 10). Click Check for updates .
Before downloading anything, it's helpful to understand what you're working with. The Jieli AC4100 is not a simple USB Bluetooth adapter. It is a complex, integrated system-on-a-chip (SoC) built around a 32-bit OpenRISC processor core. It's an embedded solution designed by Jieli to be the brain inside small, affordable, and feature-rich Bluetooth audio products. The Jieli AC4100 is a highly popular, low-cost
If you need to use the dongle for data transfer, connecting keyboards/mice, or accessing developer modes:
: Devices dropping their wireless connection randomly.
Windows frequently turns off USB ports to save power, which can cause budget Bluetooth adapters like the AC4100 to drop connections unexpectedly. Select Browse my computer for drivers
If your device isn’t working, the problem is almost always or hardware limitations of the AC4100 itself—not missing drivers.
Zhuhai Jieli Technology is a major Chinese semiconductor company that manufactures low-cost, high-efficiency Integrated Circuits (ICs). Their chips power millions of unbranded or white-label consumer electronics, including: