Got an old desktop or industrial machine with an ISA slot that needs more serial or parallel ports? This expansion card adds two RS232 serial ports (COM1 as a DB9, COM2 as a pin header) and one parallel port (LPT1 as a DB25). It runs on a single 5V power rail, so it's compatible with older systems like 8086, 80286, 386, 486, and early Pentium/Celeron machines. Perfect for connecting legacy gear—think dot matrix printers, plotters, scanners, POS terminals, PLCs, factory control equipment, or scientific instruments. The card is bare PCB style, so you'll need to install it in an available ISA slot and possibly configure IRQs or addresses in the system BIOS. A must-have for retro computing enthusiasts, hobbyists, or anyone maintaining older industrial or lab equipment that still relies on serial/parallel communication.
