Downloading and installing the driver for the cutting plotter often involves setting up a USB-to-serial communication bridge rather than a traditional printer driver. Most users require the CH340/CH341 or FTDI USB-serial adapter drivers to make the computer recognize the machine as a COM port. Key Driver & Software Sources
A driver alone won't make the machine cut; you must configure your software (FlexiStarter, SignCut, or Artcut) to match the driver settings. Seiki 870T Password - General discussion - USCutter Forum Seiki 870t Driver UPD Download
Downloading and installing the driver for the cutting plotter often involves setting up a USB-to-serial communication bridge rather than a traditional printer driver. Most users require the CH340/CH341 or FTDI USB-serial adapter drivers to make the computer recognize the machine as a COM port. Key Driver & Software Sources
A driver alone won't make the machine cut; you must configure your software (FlexiStarter, SignCut, or Artcut) to match the driver settings. Seiki 870T Password - General discussion - USCutter Forum