Add one serial port with fewer conflictscompatible with most rs232 peripherals the manhattan serial pci card with one external db9 port is an ideal solution for attaching a serial device modems barcode scanners printers and more through a single pci card its high speed 16c55016c450 uart serial db9 com port fully supports pci irq sharing even if accessed simultaneously to help save valuable resources for other expansion cards universal bus power design for 5 volts and 33 volts allows