: Open Device Manager on Windows and look under "Ports (COM & LPT)". Your cutter will usually appear as "USB-Serial CH340" or "FTDI" followed by a COM number (e.g., COM3 Settings for : Model/Cutter : Select JK or GoldCut JK Series .
The JK721 is versatile and works with various industry-standard design programs: driver goldcut jk 721 portable
: Equipped with Dual-port Connectivity , supporting both high-speed USB for modern PCs and Serial (COM) ports for older legacy systems. : Open Device Manager on Windows and look