i have a mimaki cutter. my serial card got broken in shipping. so i am trying to use a triplite key span adapter to run the machine from my laptop. originally i used a desktop computer. tried all of the computer stores and none have a pci to serial card. i am trying to run the machine from a usb to keyspan to db25 connection. i keep getting all sort of weird communication errors. but still nothing from the plotter. please help thanks.