Install — Neoprogrammer 21 019 Ch341a

The CH341A requires specific drivers to be recognized by Windows.

Run the installer as Administrator. Connect the CH341A to the USB port; Windows should recognize it as an interface device rather than a COM port for NeoProgrammer use. Verification: neoprogrammer 21 019 ch341a install

If you have a cheap USB programmer (the little black or green dongle found everywhere on Amazon/eBay), you’ve probably struggled with the ancient, buggy software that comes on the mini-CD. The CH341A requires specific drivers to be recognized