Hi guys,
My apologies if these two questions have been asked and answered before.

1- I have a MAXIMUS IX Formula mounted in Corsair Mid-Tower ATX case. Will I be able to install a slightly larger MAXIMUS IX EXTREME motherboard in that case? Will the cutouts in the back, mounting screw holes, standoffs etc. match up or do I need to be shopping for an EATX Case as well?

2-My current power supply is a Corsair AT1200i. I am pretty sure it will be enough power for the new motherboard. However I am not sure if the new MAXIMUS XI EXTREME has different power supply cabling requirements than a standard motherboard.

I was hoping others who may have had the same questions and had them answered will be able to help so I can order what I don't have and need or use what I already have.

Appreciate any and all attempts to help.