To understand the keyword, we must break it down:
If your computer sees the CH341 as an "Unknown USB Device," here is the fix.
Problem 1: Device detected but "CH341A" option is grayed out. usb drive ch341 3 1
Problem 2: Verification fails when writing BIOS.
Problem 3: The device gets scalding hot. To understand the keyword, we must break it
In UART mode, the CH341 can program microcontrollers that lack a built-in USB interface (such as the Arduino Pro Mini or bare ESP8266 modules). You connect the TX, RX, DTR (for auto-reset), and GND pins.
If you want a menu when plugging in the USB drive, create an autorun.inf: Problem 2: Verification fails when writing BIOS
[AutoRun]
OPEN=Start_Here.html
ICON=ch341.ico
ACTION=Open CH341 Tools
And an HTML start page linking to the folders.