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Baud Rate Matching: Ensure the Baud Rate in your software matches the plotter's settings (usually 9600 or 38400). jk 721 cutting plotter driver download
Look for a file named JK USB Driver (32bit-64bit).zip or PLT Driver Install.exe . He clicked download
If your machine is still not cutting after these steps, the issue is likely a faulty USB controller on the JK 721 motherboard. In that case, switch to using a USB-to-Serial adapter (Prolific PL2303) – a hardware fix that outperforms any software driver. jk 721 cutting plotter driver download