While the physical cable plugging into your computer is a standard USB line, Windows 10 does not recognize the machine as a native USB printer. Instead, the driver emulates a legacy serial communication port (COM port). The most common chipsets used inside the ROHS 721 are:
Windows 11 handles legacy serial drivers similarly to Windows 10. If you get the ROHS 721 working on Windows 10, the same driver will continue to function after an upgrade to Windows 11. However, avoid upgrading mid-project—test first on a backup system.
: Manufactured by WCH, this is highly common in budget Chinese plotters. rohs cutting plotter 721 drivers windows 10
: If the COM port number is 10 or higher, many cutting softwares will not see it. Right-click the device > Properties > Port Settings > Advanced, and change the COM Port Number to one under 10. 3. Software Compatibility
Adjust the settings to match standard cutting plotter parameters: While the physical cable plugging into your computer
Select to grant Windows 10 the necessary permissions to modify system drivers. Click the Install button within the driver setup utility.
To prevent this, optimize your COM port settings in Windows: If you get the ROHS 721 working on
or PL2303 (Prolific) (Common in slightly older or branded variants)
Which are you using? (e.g., SignMaster, ArtCut, CorelDraw)
You can typically download these from Driver Scape or official support portals like USCutter .