Installation Steps (USB & Legacy Ports)
Download the correct driver installer (usually CH341SER.exe ). cutting plotter 721 driver windows 10
To confirm that your driver is working, you must check its assignment in Windows. Installation Steps (USB & Legacy Ports) Download the
. He downloaded the correct driver, unzipped the files, and ran the installer as an administrator unzipped the files
Some older 721 drivers include a pre‑installation routine that can interfere with subsequent attempts. If you see this message:
Note the COM port number (e.g., COM3). Some older software requires this to be set between COM1 and COM4 to function correctly. forum.uscutter.com 3. Setting Up Your Software
Found in older or premium variants of the machine. 2. Where to Download the Right Driver