Modern Windows versions often require special steps due to driver signature enforcement. Disable Driver Signature Enforcement: Troubleshoot Advanced options Startup Settings to select "Disable driver signature enforcement". Install the USB Driver:
If your 721PE driver is installed but the machine refuses to cut, look through these common troubleshooting scenarios. Issue 1: "Cannot Open Port" or "Device Not Found" Error cutting plotter 721pe driver
Uninstall the current driver. Restart your PC, download the latest version of the CH340 driver that supports Windows 10/11 digital signing, and reinstall. Problem: The Machine Stops Cutting Mid-Way Modern Windows versions often require special steps due