Most legacy cutting software prefers COM1, COM2, COM3, or COM4 . If your computer assigned it COM12, right-click it > Properties > Port Settings > Advanced and change the COM Port Number to a lower value (e.g., COM2). 5. Software Setup
The JK Series typically uses one of three USB bridge chips: goldcut jkseries driver windows 7
: Run the USB driver setup from your installation media. Verify the connection by opening Device Manager and confirming a "USB-SERIAL CH340" port is listed under Ports (COM & LPT) . Add Device as Printer : Most legacy cutting software prefers COM1, COM2, COM3,