USB to TTL ch340 module installation (win10)

1、 First installation ch340 drive

Click on Setup, Click Install again

Plug in after installation USB turn TTL modular , Open the computer device manager , If yellow exclamation point appears , As shown in the figure below , The topic owner has worked on various methods online all afternoon , Including disabling signatures and so on , But none of them were successfully installed .

Click on CH340 drive , You can see the error message ：

Code name 31 The object name referred to already exists .（ The questioner guessed that it should be Bluetooth linked COM3 and CH340 Of COM3 It's a double name ）

What should we do now ？

hold USB turn TTL Unplug the module , Delete both Bluetooth links , Uninstall through the previously installed driver CH340 drive .

then , Reinstall the drive , After installing the driver, plug it in USB turn TTL modular , Check device manager , You can see at this time CH340 Drive success