Steam Deck natively recognizes the PS3 controller. Simply plug it in via USB, wait for Steam OS to recognize it, then unplug USB cable and it will work over Bluetooth without needing
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How to Connect PS4 Controller to a PC
How to Connect PS4 Controller to Gaming PC with Steam - YouTube
How to use a PS4 controller with Steam
OUTDATED SEE DESCRIPTION - How to Connect PS4 Controller to PC with STEAM'S Built in Drivers - 2021 - YouTube
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How to Use a PS4 Controller on Your PC or Mac
Steam Community :: Guide :: How to get PS4 Controller button layout
How to Use a PS4 Controller on Steam
How to Connect a PS4 DualShock 4 Controller to a PC | PCMag
Steam will support PS4 controllers natively on PC | Eurogamer.net
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How to Use PS4 Controller on Steam [Step-by-Step Guide] - MiniTool Partition Wizard
How to Connect a PS4 Controller to Steam (with Pictures) - wikiHow