Adjust these directly on the JK 721 hardware, as they often override the driver settings.
: Select the exact COM Port number found in your Device Manager.
Adjust this based on your material thickness. If the blade isn't cutting through the backing, increase the force.
This comprehensive guide covers everything you need to know about finding, installing, and troubleshooting the to get your machine running perfectly. Understanding the JK 721 Hardware Connections jk 721 cutting plotter driver
Go to Device Manager -> Ports -> Right-click your COM Port -> Properties -> Port Settings -> Advanced. Ensure that Flow Control is set to Hardware or RTS/CTS . This forces the computer to wait until the plotter has finished cutting the current buffer before sending more nodes. 4. No Ports (COM & LPT) Section in Device Manager
Last updated: October 2025. Compatible with Windows 11 24H2, MacOS Sequoia (with FTDI workaround), and all JK 721 variants (blue, orange, Vevor, Ten-High).
Most users connect the JK 721 via USB. Follow these steps for a successful installation: Adjust these directly on the JK 721 hardware,
Once Windows recognizes the hardware port, you must configure your design software to send data to that exact location. Setting Up in SignMaster / VinylMaster
Most JK 721 plotters rely on the or FTDI chipset for USB communication. The standard driver you need to download and install is the CH340 USB-to-Serial Driver (frequently packaged as CH341SER ). Where to Download the JK 721 Driver Safely
The CH340 driver failed to install or Windows overwrote it with a generic driver. If the blade isn't cutting through the backing,
Note: If you see a yellow warning triangle next to the device, the driver did not install correctly or is blocked by Windows driver signature enforcement. Step 3: Configuring Your Cutting Software
Select the exact you noted in Device Manager. For Artcut Users: Click Cut/Plot to open the spooler window.