XHC-WHB04B-4 config difference

Is there a difference between the configuration of the XHC-WHB04B-4 and the XHC-WHB04B-6. I understand there may be more buttons on the -6 but I'm more concerned about the core functionality of the MPG wheel, axis selection switch, and the step scale switch. I got it working in Axis sim but not sure I have it working perfectly. I started out with the example config from the documentation page. I did notice that hitting the "W-HOME" button invoked a Macro 4 popup in Axis, which seemed odd.