The various Compact DAQ digital IO modules available can be either correlated or not.
However, there is no information regarding this in the various device specifications.
The information is required because a correlated device is required to access the chassis counters.
A comparison table for correlated devices does exist on NI.com (see link below) but the user has to search for it. It would be far more useful if it were included in the device documentation and specifications along with a supporting information.
http://digital.ni.com/public.nsf/allkb/3114EE73A39F1300862578BE0059A895
