Linux driver for USB to serial port, supports CH340 and CH341, supports 32/64-bit operating systems.įor CH340/CH341/CH342/CH343/CH344/CH347/CH9101/CH9102/CH9103/CH9104/CH9143, USB to serial port VCP vendor driver of macOS,supports OS X 10.9~10.15,OS X 11(Big Sur)and above,contains installation guide documents.ĬH340 datasheet, USB bus converter chip which converts USB to serial port, printer port, IrDA SIR etc.