Add 2 high speed rs 232 serial ports to your pc through a pci expansion slot the pci2s550 2 port 16550 serial card can be installed in an available pci slot to add two rs232 serial ports to your system a cost effective solution for connecting any new or legacy serial device with data transfer rates of up to 1152 kbps perfect for connecting serial modems pos devices pdas digital cameras printers isdn terminal adapters and more to your system the adapter card supports irq sharing and