Jinka Jk 721 Cutting Plotter Driver _hot_ -

Those are likely viruses.

| Problem | Likely Cause | Solution | |--------|-------------|----------| | "Driver not found" during install | Wrong chipset driver | Install CH340 or PL2303 driver separately (search "CH340 Windows driver") | | Plotter cuts random shapes | Baud rate mismatch | Match baud rate in software (e.g., 9600) with plotter's internal setting (on LCD panel: Menu > Interface > Baud) | | USB disconnects randomly | Power saving enabled | In Device Manager > USB Serial Port > Properties > Power Management > Uncheck "Allow computer to turn off this device" | | Contour cutting not working | Optical sensor driver missing | Reinstall the main driver; ensure "JK-721 CAM" is visible in Device Manager | | Driver installs but plotter not responsive | Wrong COM port | In Device Manager, change COM port number to COM1-COM4 (Right-click > Properties > Port Settings > Advanced) | jinka jk 721 cutting plotter driver

Installing the driver is only step one. Your cutting software must be configured to use it. Those are likely viruses

Many users prefer designing in Corel and sending directly to the plotter via a "Cut" plugin. Many users prefer designing in Corel and sending

Sites like DriverGuide or CNCProFi often host the driver. , as malicious actors sometimes inject code into niche drivers.

Despite correct installation, you may encounter issues. Here is a troubleshooting table: