To make the Jinka 721 correctly, you need the specific chipset driver (often Realtek 8812BU, 8821CU, or MT7612U).
: Once downloaded, right-click the .zip folder and select Extract All . download driver jinka 721 for windows 10 work
Try Windows Update first
: If using a serial connection, ensure it is a high-quality RS-232-C cable; standard serial cables may fail to communicate. To make the Jinka 721 correctly, you need