You'll need the HDMI Link app, a UVC/UAC card, HDMI cable, and possibly a power cable. Plug in the card, grant permissions, ...

and an app (somewhat oddly named “Meta Quest HDMI link”) running on the headset takes care of accepting video over USB and displaying it in a window within the headset. The video signal ...

Meta Quest 2, 3, and Pro owners can now beam HDMI devices such as game consoles, handheld PCs like the Steam Deck, and more ...

A minor but useful feature is being taken away from Meta Quest users this month, Quest Move, and there's no hint a replacement is planned.