With National Instruments’ PCI-232/16 serial interface board you can
multiply the number of RS232 connections to your PC by 16 per PCI card
slot. The unit comes with a 16-port DB-9 breakout box and is
plug-and-play compatible, allowing users to access it like standard
serial ports. The configuration of 16 RS232 ports per card makes large
channel count applications much easier to create when working with a
limited number of PCI slots.