PS5 supports most PS4 controllers and accessories, with one catch - Polygon
Amazon.com: Razer Raion Fightpad for PS4, PS5 Fighting Game Controller: 8 Way D-Pad - Mechanical Switch Front Buttons - 3.5mm Headset Jack – Black : Everything Else
Can you use a PS4 controller on PS5? - VideoGamer.com
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Can You Use a PS4 Controller on PS5? Yes, Here's How
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PS5 controller vs PS4 controller - Is it actually better? (PS5 DualSense controller) - YouTube