Industry Standard Architecture - Wikipedia The installation is simple and it is convenient for using. Legacy Port Card For Pentium Esata Card MOUDOAUER 2-port Expansion Card (ISA RS232 Serial And Parallel Port), 5V Adapter Card ISA COM1 COM2 LPT Card PC Adapter Parallel Pcie Card Serial Port Adapter Specifications:COM1 Serial: DB9 PortCOM2 Serial: Pin InterfaceLPT1 Parallel: DB25Power: 5VPackage include:1* ISA RS232 Serial and Parallel Port Card All are RS232 levels. The board only needs a single 5V power supply. Working with printers, scanners, plotters, point of sale terminals, PLCs, control/automation in factories, scientific sensors, medical equipment. Package include This ISA expansion card adds two RS232 serial ports (COM1 as a DB9 connector, COM2 as a pin header) and one parallel port (LPT1, DB25) to any... It was tested to strict standards to help resist wear and electrical burnout for reliable operation and long service life. Retro computer ISA interface card, 8086 80286 80386 80486 586 for pentium or for Celeron machine with ISA slot can be used.