The driver only creates the connection; you still need software that "speaks" the HPGL language used by the Seiki 870T . Popular options include: SignCut Pro: Seiki 870T is officially listed as a supported device in the SignCut Pro library
: Some newer versions or specific cables require the FTDI chip drivers for Windows compatibility. 2. Where to Download Seiki 870T Drivers Seiki 870t Driver UPD Download