a Dualsense update has improved backward compatibility with PS4 games
Wireless Controller Adapter Converter, TSV USB Wireless Bluetooth Connection Adapter Fit for Nintendo Switch, PC Windows, PS4, PS5 DualSense Controller, Xbox One S Controller Wired Connection - Walmart.com
DualSense Compatibility Test Shows It Works With Other Devices, Not PS4
DualSense firmware update improves rumble in PS4 backward compatibility games | TheSixthAxis
How to Use the DualSense PS5 Controller on PS4 | Attack of the Fanboy
PS5 DualSense controller vs. PS4 DualShock 4 controller: Which is better? | Android Central
PlayStation 5 will support PS4 controllers, but only for playing PS4 games - The Verge
How to connect PS5 controller to PS4 console: Use your DualSense with the PlayStation 4 - Stealth Optional
How To Connect Your PS5 DualSense Controller With Your PS4
Wireless Bluetooth Controller Adapter, Converter for Nintendo Switch, PC Windows, PS4/PS3,PS Classic. Support PS5 DualSense Controller, Xbox One S Controller Wired Connection - Walmart.com
Does PS5's DualSense Controller Work On The PS4 | Screen Rant
No, Your Current PS4 Controller Won't Work With PS5 Games; Will Work With Supported PS4 Games
PS5 DualSense unboxing reveals Android and PC support - The Verge
A look at which PS4 accessories will work with the PS5 | Digit
Can you use PS5 DualSense controllers on PS4? - GameRevolution
Is the PS5 backwards compatible with PS2, PS3, and PS4 games?