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How to Install CH341/CH340 Driver for Arduino UNO SMD – Step-by-Step Guide

If you're using an Arduino UNO SMD board and your PC is not detecting the board or the COM port is not showing in Arduino IDE, the issue is usually with the missing CH341 or CH340 USB driver.

In this guide, we’ll walk you through the complete driver installation process to fix the issue and get your Arduino board up and running.


What is CH341/CH340?

UNO SMD CH340 DRIVER IC
UNO SMD CH340 DRIVER IC

The CH341/CH340 is a USB-to-serial converter chip used in many low-cost Arduino boards, especially the Arduino UNO SMD (Surface Mount Device) version. Without this driver, your computer won’t recognize the Arduino board.


Requirements

  • Arduino UNO SMD board

  • Windows laptop or desktop

  • Arduino IDE installed

  • Internet connection



Step-by-Step Driver Installation


Step 1: Download the CH341/CH340 Driver

  1. Go to our official website: https://www.kiwistronics.com/resourses

or Direct download


  1. Find and click on the “CH340/CH341 Driver – Windows” download link.

  2. A ZIP file will be downloaded to your Downloads folder.



Step 2: Extract the ZIP File


  • Go to your Downloads folder.

  • Right-click the downloaded ZIP file.

  • Choose “Extract All…” and extract it to a folder.


Step 3: Run the Setup File

CH340 DRIVER INSTALLATION (Double click the setup.exe file)
CH340 DRIVER INSTALLATION (Double click the setup.exe file)

  • Open the extracted folder.

  • Look for the file named SETUP.EXE or CH341SER.EXE.

  • Double-click the file to run the installer.

  • A setup window will appear – click the “Install” button.

    CH340 DRIVER INSTALLATION (click the install button)
    CH340 DRIVER INSTALLATION (click the install button)

  • Wait a few seconds; a popup will show “Driver installed successfully.”

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Step 4: Connect Your Arduino UNO SMD

  • Plug your Arduino UNO SMD board into the USB port.

  • Wait for Windows to detect the board.

  • If installed correctly, Windows will assign a COM port to it.


Step 5: Check in Arduino IDE

  1. Open the Arduino IDE.

  2. Go to the menu: Tools → Port.

    Select Your COM Port
    Select Your COM Port

  3. You will now see a COM port (e.g., COM3, COM4).

  4. Click on it to select the correct port for uploading code.

That’s it! Your Arduino UNO SMD is now ready to use!


Troubleshooting Tips

  • If no COM port is showing, try unplugging and plugging the USB again.

  • Use a good quality USB cable (some power-only cables won’t work).

  • Try restarting your computer after driver installation.


Download Link


CH341/CH340 Windows Driver: https://www.kiwistronics.com/resourses


or Direct Download



Installing the CH341/CH340 driver is a one-time setup that ensures your Arduino UNO SMD board communicates smoothly with your PC. This simple process solves "port not showing", "board not detected", and upload error issues.

If you found this guide helpful, don’t forget to share with your friends and check out other beginner tutorials on our site!


Comment below or reach out to us at info@kiwistronics.com  or Chat us 8124422676 — we’re happy to help!

Thanks for reading! Feel free to comment, .


– Team Kiwistronics ❤️www.kiwistronics.com


 
 
 

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