Can the PS5 Slim play PS4 games? In short, yes. - PC Guide

Backward compatibility is one of the prime things to consider before a console upgrade, so check out if the PS5 Slim can play PS4 games here.
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FASTSNAIL Charging Stand with Cooling Fan Only for PS5 Slim Console, Dual Controller Charger Station with 9 RGB Light for DualSense/Edge, Quiet Cooling System Accessories for PS5 Slim Digital/Disc : Everything