Can be used for serial interface software downloading, programming, etc.

  • Three status LED, pwr, tx and rx
  • TTL level selectable: 3v3 or 5V.
  • Support up to windows 8
  • Documentation on this page.
  • Note: Only 5V can be used to power external target device, 3V3 only used for TTL.
  • Buck order price $0.8 for more than 50pcs order, price will automatically updated in the cart page.

Additional information

Weight 0.01 kg


6 reviews for USB-TTL Serial CH340 Board

  1. 5 out of 5

    Gloria (verified owner)

    Easy to use, 5V or 3V3 jumper selectable. Very useful and inexpensive tool. Works in Ubuntu.

  2. 5 out of 5

    telefonni (verified owner)

    Good for the price. Very useful.

  3. 2 out of 5

    nfriedly (verified owner)

    There doesn’t appear to be an official OS X driver. There’s an unofficial one at but it costs 7x the price of the device….

  4. 5 out of 5

    conradj (verified owner)

    Very good price and works perfectly. Using them program ESP8266 modules.

  5. 5 out of 5


    Works absolutely great for the price! Remember to download the recommended driver via
    and consider to press the reset button while uploading your program.

  6. 5 out of 5

    mandi (verified owner)

    Works like a charme. (Don’t forget to use the driver ‘njnazim’ desribed) I have replaced te 6-pin single-row male connector by a 2×6-pin double-row connector. I wired DTR and other signals to the second row. Now I get the ‘automatic reset’ like on the original FDTI board. Really a nice little board. Using it for programming Mini Pro and others.

Add a review

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Product Enquiry