Dell Inspiron 570 Case Help

Hello everyone,

I had a very quick question to ask. I have a Dell Inspiron 570 desktop PC. I wanted to know if this computer's case is an ATX case or not. The reason is that I ordered this new ATX motherboard: http://www.amazon.com/gp/product/B00K2RQDLQ/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 and it is an ATX motherboard. I wanted to put it inside my existing dell inspiron 570 case. Will it fit alright? 

Thanks for the help in advance!