Call for PCI-X, 3.3V Compatibility Up to 120 channels of digital I/O All I/O lines buffered on the card Four- and eight-bit groups independently selectable for I/O on each 24-bit port Hysteresis correction and choice of pull-up and pull-down resistors on I/O lines Interrupt and interrupt-disable capability Tri-stateable I/O ports under software control +5V supply available to user Compatible with industry standard I/O racks like Gordos, Opto-22, Potter & Brumfield, Western Reserve Controls, etc. Automatically detected by Windows 95/98/NT No base address or IRQ switches to set