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Once the driver is installed, you must tell your cutting software exactly where to look for the machine. Open on your PC. Expand the Ports (COM & LPT) section. Look for USB-SERIAL CH340 (COMX) —the "X" is a number. Note that number (e.g., COM3).
If you encounter any issues during the download or installation process, here are some troubleshooting tips: jinka jk 1351 driver software