USA GEAR Console Carrying Case - PS4 Case Compatible with Playstation 4 Slim, PS4 Pro, and PS3 - Customizable Interior Store PS4 Games, PS4 Controller, PS4 Headset, and More Gaming Accessories (Black) - Walmart.com
Is The PS4 Backwards Compatible?
Backwards Compatibility - PlayStation 4 Guide - IGN
How to Play PS3 Games on the PS4 (with Pictures) - wikiHow