National Instruments NI-9375 198918F-06L Digital I/O

National Instruments NI9421 Sinking Digital Input -used-

National Instruments NI 9425 199019D-06L C Series Digital Module

National Instruments NI 9977 cRIO slot filler - custom module

National Instruments cRIO NI-9401 8 Channels Digital Input/Output Module 100ns

National Instruments NI 9403 DSub cRIO 32 Channel TTL digital IO module Dsub37

NATIONAL INSTRUMENTS DIGITAL OUTPUT, 199018B-02L - NI9476 (USED)

National Instruments NI PXI-1031