Macbook pro 13" Retina
System: macOS Sierra 10.12 Beta (16A304a)
Usb Serial Device: NEJE Laser Engraver Printer
Drive: CH34X USB-SERIAL DRIVER INSTALLATION INSTRUCTIONS Version:V1.0
When NEJE connected my macbookPro, the Mac is borken, caused Four-languages-Error. Check "System Repor -> Hardware -> USB", NOT found any Usb Serial Device.
Does anyone know what's going on?TKS.