If the plotter doesn't move, try changing the COM port in your software to a different number in the device manager listing.
The official manufacturer site was a maze of broken links.
For flawless vinyl tracking and data transmission, configure your port properties with these universal parameters: 9600 Data bits: 8 Parity: None Stop bits: 1 download driver cutting plotter jinka 721 verified
If you are currently trying to bring your plotter to life, follow this verified path: The USB Foundation
If you see a yellow exclamation mark, right-click the device, select "Update Driver", browse to the WCH folder, and click "Let me pick from a list". If the plotter doesn't move, try changing the
Select your designated from the drop-down list.
If you see a yellow warning triangle next to the USB-Serial entry, the driver is blocked or unsigned. Select your designated from the drop-down list
Look at the rear panel. Do you see a square USB port (like a printer)? If yes, you need the CH340 USB driver.