Some older Jinka drivers are "unsigned." If the installer fails, you may need to disable driver signature enforcement in Windows 10 settings before trying again. Nanjing Qinheng Microelectronics Co., Ltd. 2. Setup and Installation Steps
Struggling to find the official driver for your Jinka 721 printer on Windows 10? Follow this step-by-step guide to download, install, and troubleshoot common setup issues. Download Driver Printer Jinka 721 Windows 10
Inside the folder, look for a file named Setup.exe or Install.exe . Some older Jinka drivers are "unsigned