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question about laptop docks
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this post was submitted on 19 Jul 2023
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There's no real graphics hardware in MOST docs, but some USB docks labeled display link actually have a little display adapter in the dock that is written into by your gfx card.
Also thunderbolt and to a lesser degree displayport send (or can send and often dont) partial screen updates making the endpoint do some graphics card like work.
Otherwise there are usually chips that convert formats, displayport to hdmi, etc, and logic to handle resolution negotiation which a lot of docks get wrong and leave you with 1080p when you should be seeing 4k.
Anyway yes you're mostly right "But ahkshually!!!"