To successfully bridge a (such as the JK721 or JK1351) with a Windows 7 PC , installing the correct USB-to-Serial CH340 chipset driver is essential. Because these vinyl cutters rely on legacy virtual COM port configurations, Windows 7 cannot recognize the hardware automatically via standard USB plug-and-play.
Windows 7 rarely recognizes legacy cutting plotters automatically. You must manually acquire the communication driver. goldcut jkseries driver windows 7
Your design and cutting software must match the Windows Device Manager settings precisely, or the cutter will remain unresponsive. To successfully bridge a (such as the JK721
: Match the exact COM port found in Device Manager (e.g., COM3). the issue is usually port-related.
If the driver appears installed but the cutter does not physically respond when you send a job, the issue is usually port-related.