Visit the official manufacturer website or a trusted distributor like Jinka. Download the "CH341SER" or "USB-to-Serial" driver package. 2. The Installation Process
If this section doesn't appear when you plug the plotter in, the computer doesn't see the hardware at all.
Set the Brand/Model to or Refine , and select JK-721 (if not listed, select Redsail or Generic DM/PL , as they share language commands). Set the Connection type to Direct COM Port . jk 721 cutting plotter driver
Search for "CH340 USB to Serial driver Windows" or download it from the official manufacturer's website (WCH). 2. The FTDI or PL2303 Chipset Driver
Getting your JK 721 cutting plotter to communicate perfectly with your computer requires the correct driver. Without the proper software link, your vinyl cutter might ignore design commands, pause mid-cut, or refuse to connect entirely. Visit the official manufacturer website or a trusted
Match the COM port found in Device Manager (e.g., COM3). Baud Rate: Usually 9600 or 38400 . Flow Control: Hardware or RTS/CTS. ⚠️ Troubleshooting Common Driver Issues
Go to Device Manager -> Port Settings and change Flow Control to Hardware . Ensure your vinyl cutter is grounded properly; static buildup from rolling vinyl can crash the USB-to-serial chip connection mid-job. 3. Device Manager Shows a Yellow Exclamation Mark Triangle The Installation Process If this section doesn't appear
Look for an entry named , where "x" is a number (e.g., COM3 or COM4).
Set the baud rate to 9600 or 38400, depending on your machine's settings (refer to the machine's LCD menu). 5. Troubleshooting JK 721 Driver Issues If your plotter is not cutting, try these solutions:
Click . A prompt should appear saying "Driver install success." Phase B: Verify the COM Port