Sienoc PCI-E Express to 2 Serial DB9 RS232 RS-232 Parallel DB25 Controller Adapter Card PCI-E Express to 2 Serial DB9 RS232 RS-232 Parallel DB25 Controller Adapter Card NOTE:This card can not use for the 278 or 378 Port When you connect the external devices( such as plotter,machine tool ) to this card ,the PC's system automatically assigns the address port (such as LPT1,COM1). If this address port of the peripheral equipment isn't on 278 or 378 port ,or can modify to other port. The peripheral equipment can normal use .