how do I remove the driver?
This command in terminal will remove the old driver:
sudo rm -rf /System/Library/Extensions/usb.kext
After that you might install the latest CH340 driver which is promoted as being "Sierra compatible":
how do I remove the driver?
This command in terminal will remove the old driver:
sudo rm -rf /System/Library/Extensions/usb.kext
After that you might install the latest CH340 driver which is promoted as being "Sierra compatible":