Form Factors - A Motherboard & PC Case Size Guide

So I was looking at a lot of the modern PC cases and I am finding a lot of them do not seem to have any area to mount a DVD drive

Administrators or business owners can choose from basic computer chassis housings, desktop computer case No Optical Drive · DVD-ROM · DVD-RW

computer expansion slot Buy accessories for 19 rack computer cases Get PC case Hard drive Cases · Interface NGFF · SATA Interface · SATA2 Interface · Blu-Ray DVD and CD

computer case with dvd slot Buy accessories for 19 rack computer cases Get PC case Hard drive Cases · Interface NGFF · SATA Interface · SATA2 Interface · Blu-Ray DVD and CD