Can you use a PS4 controller on a PS5? Yes, here's how

To use your PS4 controller on a PS5, connect it to the PS5 with a USB cable and press the PlayStation button on the controller.
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How to Pair a PS4 Controller to a PC

To get your PS4 controller working with your PC, you’re going to need to decide how you want to connect. You can pair it over Bluetooth if your PC supports it, or you can use a USB cable to keep the ...