: Many laser engravers use these specific drivers for PC communication.

: If the manual install fails, check Device Manager . If you see a "USB2.0-Serial" device with a yellow warning icon, right-click it and choose "Update Driver," then point it to the folder where you extracted the DRVSETUP64 files.

If the error persists, Windows may be denying your user account permission to write to the system Temp folder.