Look under . Your plotter should appear as "USB-Serial CH340" or similar, assigned to a port like COM3 . Configure the Port:
Often found in older or legacy 721 models. rohs cutting plotter 721 drivers windows 10
Run the installer before plugging in the plotter. Look under
Right-click the device > > Port Settings > Advanced . rohs cutting plotter 721 drivers windows 10
You can typically download these from Driver Scape or official support portals like USCutter .
Obtain the driver .exe or .zip file. Right-click and extract the contents.