Hold down the while clicking Restart in the Windows Start Menu.

Upon reboot, press or 7 to select "Disable driver signature enforcement" . 3. Driver Installation & Port Configuration Once your PC has rebooted into the special mode:

If you have more details about the Driver Jinka 721, such as:

Select as the manufacturer and Jinka 721 (or JK721) as the model. If Jinka is not listed, the Redsail or Roland PNC-1000 driver models frequently share the exact same command language (HP-GL). Set the output connection to Serial/COM Port .

Set the parameters exactly as follows to match the internal Jinka motherboard speed:

: Tools like Easy Cut Studio and SignCut offer built-in drivers for Jinka plotters. Essential Installation Steps for Windows 10 64-bit

Driver Jinka 721 Windows 10 64-Bit Exclusive: The Ultimate Installation Guide

Ensure you have the .ypt or cutting profile file specific to the Jinka 721 for your cutting software (ArtCut, FlexiSign, or SignMaster).

Download the driver package and extract it to your desktop.

Go to product viewer dialog for this item. Windows 10 64-Bit Exclusive: The Ultimate Installation Guide

This indicates a physical connection or voltage issue. Windows 10 64-bit aggressively manages USB power. Go to Device Manager > Universal Serial Bus controllers > USB Root Hub > Properties > Power Management. Uncheck "Allow the computer to turn off this device to save power."