If you see a yellow triangle icon next to the device, the driver did not install correctly. Right-click the item, select Update Driver , and choose Search automatically for drivers .

To summarize: downloading a generic "Jinka 721 driver" from a random site will often lead to failure. The secret is to (likely 8812BU or 8821CU), download the driver from a trusted source (GitHub or Microsoft Update Catalog), and then install it with driver signature enforcement disabled .

Select "Jinka 721" or "Goldcut" as the device model. If yours is not listed, try "DMPL" or "HPGL" generic settings, as Jinka plotters support both.

If you plan to cut directly from CorelDRAW, check the JK 721 Support Page for integrated driver and plug-in bundles. 2. Windows 10 Installation Steps

: The Jinka Indonesia Download Page