Aside from that you can look to the purchase / play banner on the store pages for the SteamOS icon. It's a little confusing ... You can also check user-submitted reports on ProtonDB to see what ...

ensuring users receive the same patches and pre-compiled shaders that Valve regularly releases for its flagship handheld. Although other devices will have access to SteamOS before the Legion Go S ...

While users can freely download and install the SteamOS image onto their own devices, companies aren’t allowed to sell it or modify it, and must partner with Valve first. There are some non ...