Jk 721 Cutting Plotter Driver [better] Jun 2026
Right-click on or 'My Computer' > Manage > Device Manager . Look under "Other Devices" or "Universal Serial Bus controllers." If you see a yellow exclamation mark next to "USB2.0-Serial," you need the CH340 driver. 3. Installing the Driver
The JK 721 is notoriously difficult on Mac. Apple’s USB stack does not like the CH340 chip. jk 721 cutting plotter driver
Some older variants or specific factory batches use FTDI or Prolific chips. Right-click on or 'My Computer' > Manage > Device Manager