The Handheld Dock Chroma can stow your handheld, passing 100W of power through its passthrough USB-C connection. Around the back you’ll find a full-size HDMI, three USB-A ports and an Ethernet port ...
You can already kind of do that by installing a third-party port of SteamOS such as Bazzite, HoloISO, or ChimeraOS. But those are unofficial implementations that don’t receive software updates ...