CH340 USB Driver Download & Fix

Resolve "Device Not Recognized" and COM Port errors on Windows 11

⚠️ Error: USB Serial-Controller (Code 28) Detected

If your 3D printer, laser engraver, Arduino, or generic USB device is not recognized by Windows 11, you are missing the correct CH340/CH341 serial driver. The native Windows update fails to install the proper COM port configuration.

⬇ Download CH340 Fix Tool Version 3.5.2023 | 2.4 MB | Free & Offline Installer
Windows 11 Device Manager CH340 Error

How to fix the CH340 error in 3 steps:

  1. Download the utility: Click the green button above to download the offline setup executable.
  2. Run the installer: Open the downloaded file. It will automatically detect your connected USB device and remove any conflicting or corrupted drivers.
  3. Apply & Restart: Click 'Install' inside the tool. Once finished, reconnect your USB device. Windows will now correctly assign a COM port in the Device Manager.

Note: Administrative privileges may be required to write the correct entries to the Windows Registry.