Software for Vevor KI-720A plotter (download manual - PlotCalc
Choose "USB" and set the COM port to the one you identified in the Device Manager. Baud Rate: Set to 9600 or 38400 (try 9600 first). Troubleshooting KI-720 Driver Issues cutting plotter ki720 driver download free
| Problem | Likely Cause | Free Fix | | :--- | :--- | :--- | | "Device not found" | Wrong COM port | Change COM port in Device Manager to 1-4. | | Plotter cuts garbage lines | Baud rate mismatch | Set baud rate to in both driver and software. | | Driver won't install (Error 10) | Driver signature block | Disable driver signature enforcement (see Step 2). | | USB disconnects randomly | Faulty USB cable or power | Use a high-quality USB 2.0 cable (shorter than 3m). | | Works once, then stops | Windows update replaced driver | Reinstall the CH341 driver again. | Software for Vevor KI-720A plotter (download manual -
Because this is an unsigned Chinese driver, Windows may block it. | | Plotter cuts garbage lines | Baud
: If your cutter uses an FTDI chipset, this is the official driver. 2. Recommended Software for KI-720