GoldCut JK series cutters generally use one of two communication chips to bridge the USB connection to the machine’s internal logic:
Avoid using USB extension cables. The signal for these cutters is sensitive and can degrade over long distances.
If Windows 7 blocks the install, restart your PC and tap F8 repeatedly before the Windows logo appears. Select "Disable Driver Signature Enforcement" and try the installation again.
Plug the cutter into your Windows 7 PC. Go to Start > Control Panel > Device Manager . Look under "Other Devices" or "Universal Serial Bus controllers." If you see a yellow exclamation mark next to "USB2.0-Serial," you likely need the CH341 driver. 2. Downloading the Driver
GoldCut JK drivers often struggle with blue USB 3.0 ports. If the connection drops, try a black USB 2.0 port .
The most common chipset for budget-friendly Chinese cutters.