Which (e.g., Windows 10, Windows 11) are you running?

By methodically matching your PC's hardware port emulation with your cutting software's output configuration, you can maximize the lifecycle of your Rohs 721 plotter and maintain efficient production rates.

Which are you using (e.g., SignMaster, Artcut, Flexi)? What Windows version is your PC running?

What (e.g., SignMaster, ArtCut, Flexi) are you planning to use?

Because of this internal architecture, your PC requires a specific virtual COM port driver to recognize the USB connection. Without this driver, your computer will flag the plotter as an "Unknown Device," and your software will not be able to send cutting paths. Step 1: Identifying the Correct Driver Chip

) needs a specific machine profile to send the correct commands. How to Add Printer Driver in JK721 Cutting Plotter 3 Oct 2021 —

To help narrow down any specific connection issues you might be facing, let me know: Which and version are you using? What Windows operating system version is your PC running?

This indicates a Baud Rate mismatch. Your software is sending data faster or slower than the machine can process. Ensure both the cutter's physical LCD screen settings and your software settings are set to 9600 Baud Rate . Conclusion

This usually occurs if Windows automatically updated to a driver version that doesn't support clone chips.

To prevent installation errors, disconnect the cutting plotter from your PC before starting the process. Phase A: Installing the Driver Software

Click the Install button and wait for the "Driver install success" message.