CH340 Drivers – TH3D Uno & Creality V1.1.X/V4.2.X Board

Windows

1. Download the CH340 Driver
2. Run the CH341SER.exe file.
3. In the Arduino IDE when the CH340 is connected you will see a COM Port in the Tools > Serial Port menu, the COM number for your device may vary depending on your system.

(Manufacturer’s Chinese Info Link)

Macintosh

CH340 for High Sierra (10.13) or Higher

CH340 for Sierra (10.12)

CH340 for Mavericks (10.9), Yosemite (10.10) and El Capitan (10.11)

Inside the zip file you will find a PDF and a “pkg” file, short version, double click the pkg file, the PDF has some extra information.

See uninstalling information at the bottom of the page if the driver causes problems for you.

(Manufacturer’s Chinese Info Link)

Linux

Drivers are almost certainly built into your Linux kernel already and it will probably just work as soon as you plug it in.  If not you can download the Linux CH340 Driver (but I’d recommend just upgrading your Linux install so that you get the  “built-in” one).

(Manufacturer’s Chinese Info Link)

Original Source: https://sparks.gogo.co.nz/ch340.html