From what I have seen, it is more the hobby/semi professional range that has all the possible connectors built in whereas in the high end it is more modular and

From what I have seen, it is more the hobby/semi professional range that has all the possible connectors built in whereas in the high end it is more modular and you buy different modules dependent on the connectivity you need. Especially if you need to fit it into a rack. E.g. you might only have some DSUB 25 pin connectors, but they cover dozens of analog I/O channels on minimal amount of space.