A quick follow up to this - I ordered an iPad Air 1st generation (A1474) digitizer and button combination pack for this. Everything works except for the button. It appears that the syncing of the motherboard, the button and the ribbon disallows the button to communicate with the motherboard and the monitor. A $30 experiment here to see if this is the case or not. So, long story short, when doing this repair, make sure the button and the ribbon to the button are not damaged, or it will be impossible to repair at this point (until a 3rd party solution is created for the button on this model). This was not true with prior models so important to know when working on these machines.