Follow these steps carefully to ensure a clean installation.
Verified drivers are often included in specialized software like the PlotCalc plugin for CorelDRAW or SignTools 4 .
If the official website does not provide a downloadable USB driver, you can try the following alternative sources:
If you encounter problems, here are some quick fixes: -VERIFIED- Download Usb Driver Jinka 721
Right-click My Computer > Properties > Device Manager . Look under "Ports (COM & LPT)" to confirm the device appears without a yellow exclamation mark. 3. Connection Tips for Success CH341SER.EXE - Nanjing Qinheng Microelectronics Co., Ltd.
A of the CH340 driver. Alternative drivers if the WCH driver doesn't work. SignMaster configuration settings for Jinka plotters. Nanjing Qinheng Microelectronics Co., Ltd. CH341SER.EXE - Nanjing Qinheng Microelectronics Co., Ltd.
Since the Jinka driver is not Microsoft-signed, you must temporarily disable signature enforcement. Follow these steps carefully to ensure a clean installation
Look for or "USB-SERIAL CH341 (COMx)" .
Always read user reviews and check the download details carefully before installing any software.
You can also try updating the drivers through the Device Manager on your computer: Look under "Ports (COM & LPT)" to confirm
USB-to-Serial chip to communicate with your computer. Instead of searching for a "Jinka 721 driver," you should download the driver for the chip itself: CH340/CH341 Driver
Ensure the Jinka 721 USB cable is unplugged from your PC before starting.
| Problem | Solution | |---------|----------| | Device shows as “Unknown USB Device” | Replace USB cable (many cheap cables are charge-only). | | Driver installs but no file transfer | Swipe down on Jinka 721 → Change USB mode from “Charging” to ”. | | ADB not detecting device | Restart ADB server: adb kill-server then adb devices | | Windows blocks driver (unsigned) | Restart PC → Disable driver signature enforcement (Shift + Restart → Troubleshoot → Startup Settings). |
Yes. The driver package includes the fastboot interface. To enter fastboot on Jinka 721: Power off → Hold Volume Down + Power → Connect USB.