Choose Jinka 721 , Jinka JK721 , or Refine MH721 (Refine drivers are highly compatible clones if Jinka is not listed).
: Right-click the CH341SER.EXE (or equivalent) file and select Run as administrator .
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Download Driver Jinka 721 For Windows 10
: This usually means Windows installed an incorrect generic driver. Go to Device Manager, right-click the device, select Uninstall Device , check the box for "Delete the driver software for this device," and reinstall the downloaded CH340 driver.
Even after installing the driver, your software might not talk to the cutter if the COM port is incorrect. Right-click the and select Device Manager . Expand "Ports (COM & LPT)." Choose Jinka 721 , Jinka JK721 , or
Right-click the Windows Start button and select . Expand the Ports (COM & LPT) or Other Devices section. Look for an item labeled USB2.0-Serial , CH340 , or FTDI .
Understanding the Jinka 721 Hardware and Software Connection This link or copies made by others cannot be deleted
This indicates poor physical connectivity or power instability.
: Most Jinka 721 machines use the standard CH340 serial chip.
Your vinyl cutting software (e.g., SignMaster, FlexiStarter) needs to be told which port to use. Open your software (e.g., ). Go to the Vinyl Spooler or Cutter Setup .