Editing Computer tower (section)

===Mid-tower {{anchor|Mid-tower case|Mid-tower cases|Mid tower case|Mid tower cases}}===
Mid-tower cases, usually between {{convert|16|in|cm}} and {{convert|20|in|cm}} in height, are the most common form factor of [[personal computer]] towers.<ref name=Case2002p2 /><ref name=Chacos2021 /><ref name=McFedries2008>{{cite book | last=McFedries | first=Paul | date=2008 | url=https://books.google.com/books?id=_yEmKNR-FWAC | title=Build It. Fix It. Own It: A Beginner's Guide to Building and Upgrading a PC | publisher=Pearson Education | page=27 | isbn=9780132713573 | via=Google Books}}</ref> Before the late 2010s, mid-towers contained between three and four 5.25-inch drive bays and an equivalent number of 3.5-inch bays to house [[optical disc drive]]s, [[floppy disk drive]]s and [[hard disk drive]]s, leaving just enough room for a standard ATX motherboard and [[power supply unit (computer)|power supply unit]].<ref name=McFedries2008 /> Since the widespread adoption of [[USB flash drive]]s, [[solid-state drive]]s (which take up far less space than spinning hard disk drives) and the declining usage of internal optical drives, the number of drive bays has become less of a concern to the contemporary computer user, the internal space of mid-towers is now used more commonly for closed-loop [[water cooling|water cooler]]s, dual [[graphics card]]s, and tightly stacked SSDs.<ref name=Chacos2021 />