Specifically for the JK 721 model—a 720mm desktop vinyl cutter—the driver ensures:
2.1 The Communication Interface The Jinka JK-721 typically connects to a host computer via a USB interface. However, internally, the hardware logic often emulates a legacy RS-232 Serial interface. This creates a critical dependency on a two-layer driver architecture:
: Supports over 800 plotters, including the Jinka series. Troubleshooting Tips
Most Jinka plotters use a CH340 or FTDI chip to communicate via USB. Even if you have the plotter software, you often need to install the CH340 USB-to-Serial driver specifically for your computer to "see" the USB port as a COM port.
