Sienoc PCI-E Serial COM DB9 RS-232 + DB25 Printer Lpt1 Port Adapter 1.0 X1 Card With WCH chipset Compliant whit PCI-Express Revision 1.0a Support Standard Parallel Port (SPP), Enhanced Parallel Port (EPP) & Enhanced CapabilityPort (ECP), Data transfer rate support up to 115200bps (Serial Port), Data transfer rate support up to 1.5MB/Sec. (Parallel Port Support RS-232 Hardware Flow Control SPP, PS2, EPP, ECP Compatible IEEE 1284 Printer Port Message: 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 .