How can I know if my PSU would fit my case?

Arviragus

Commendable
Oct 17, 2016
4
0
1,510
My Case: Asus Essentio Series M51AD
(https://www.asus.com/us/Tower-PCs/M51AD/)

PSU: EVGA 700 B1, 80+ Bronze 700W, Power Supply 100-B1-0700-K1
(https://www.amazon.com/gp/product/B018JYHBE6/ref=oh_aui_detailpage_o01_s00?ie=UTF8&th=1)
 

Arviragus

Commendable
Oct 17, 2016
4
0
1,510


Alright, you've eased my mind because I already bought the damn thing lol. Mind telling me what actually makes a case, or anything really, ATX?