Without me looking at the question I see your answer is in a poor style. I can't comment on the technical side really but just the style/structure, some of the logic of how to reply to a question.
It is not clear what you intend to use as primary device. The Laptop?
or would an adapter that connects the devices also be acepted? In the
latter case the Steam Link device would exactly do this (transfering
GPU rendered data over ethernet and just provides them to an
That looks like very poor style
Your first sentence is a request for clarification, when it should be an answer. You can use the word IF, where you want to cater to different possibilites. Remember that you're not just answering the person that wrote the question, you are answering anybody that were to ask that question. And by covering more than one option, or by making clear that there is at least more than one option, you're making your answer more informative.
Better would be
If you are using an adaptor to connect the devices, then the Steam
Link device would exactly do this (transfering GPU rendered data over
ethernet and just provides them to an outputmedium.). Though if you
are using a laptop as primary device then I don't know.
And also, if somebody other than you has already mentioned this 'steam link device' then you aren't really adding much/anything. (I don't know if they have, but just saying).