Static electricity buildup or Windows USB Power Management shutting down the port.
Verify the software baud rate is locked to 9600 . Clear the internal machine cache by power-cycling the plotter.
Look under . You should see "USB-SERIAL CH340 (COMX)," where X is your port number (e.g., COM3). Remember this COM number . 4. Configure Your Cutting Software CH341SER.EXE - Nanjing Qinheng Microelectronics Co., Ltd.
section. Look for "USB-SERIAL CH340" or similar; the number next to it (e.g., ) is what you will use in your software. Recommendation : Users on Microsoft Q&A download driver jinka 721 for windows 10 work
Open the downloaded CH341SER.EXE and click Install .
In your software's "Cut Settings," select the Connection Type as "Serial/COM" and match the Port to the number you found in Device Manager. Standard Settings: For the
For users seeking a modern, user-friendly experience, upgrading to a newer model cutter (e.g., Graphtec or Silhouette) is advised. For users retaining the Jinka 721, utilizing FlexiSign software is the most stable solution on Windows 10. Static electricity buildup or Windows USB Power Management
Right-click the downloaded executable driver file and select .
Match the following standard industry parameters for the Jinka motherboard:
To successfully , you need to configure a compatible USB-to-Serial chipset driver (such as CH340 or FTDI) or manually install the Goldcut JK Series printer profile. Because standard plug-and-play often fails with these legacy Chinese cutting plotters, executing specific setup adjustments is required to make the hardware communicate flawlessly with modern 64-bit operating systems. Look under
The most common chip used in budget cutting plotters.
Since Jinka is a generic brand, they rarely have an official website. Instead, use the original chipset manufacturer’s driver.