This article covers the error codes that Device Manager generates in Windows. You probably came to this article because Device Manager or another tool like DXDiag reported an error code and you’re not sure how to resolve it. In this article, we’ll help you find your error code and suggest what you could try to fix the error.

CH340 Drivers for Windows, Mac and Linux

The CH340 chip is used by a number of Arduino compatible boards to provide USB connectivity, you may need to install a driver, don’t panic, it’s easier than falling off the register and much less painful.

Search for ch340 driver

How to install the CH340 USB driver software

Make sure the USB lead is unplugged from the PC/laptop.

Copy CH341SER.EXE from the Downloads folder on your desktop (or unzip it from the USB-Driver.rar file if you downloaded it from the GM website) and then double-click the icon to run it and you’ll see the following screen:

Click the “INSTALL” button and wait for it to complete:

Click OK to exit setup, then open Device Manager by clicking the Start button and type device manager in the search box at the bottom:

Double click the “Ports (COM & LPT)” section to expand it:

  • If everything works as described above, you should be able to remove the CH341SER.EXE program from your desktop and then reopen the setup and select the correct COM port from the drop-down list.
  • If the CH340 USB-SERIAL COM port is not displayed, you may need to disconnect the USB cable and then restart Windows so that it detects the USB drivers.
  • After Windows restarts, open the Device Manager window (as shown above) and then plug in the USB cable again and check if it is now recognized.
  • Hopefully, this will fix your problem, but if not, please let me know which part of the instructable didn’t work.

By Devilal

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