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How to know if a physical mux switch exists of a laptop motherboard??

Ahmed Ghoraba
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How to know if a laptop have mux switch on board ?

the reason why I am asking is that i have a Lenovo Ideapad gaming 3 2021 AMD5800h with an RTX 3060 which mentioned that the gpu have advanced optimus in the specs sheet released before march 2022

then they removed it in the spec sheet released march 

The Nvidia control panel does not report advanced optimus

So I am suspecting that it actually has chip but they decided to disable it as a mean of separating the higher legion lineup form the ideapad gaming and I want to confirm it if possible 

the opposite thing happened with dell g15 which shipped with a mux switch and later enabled by a bios update  I will attach  photos of the board and pdfs of the specs

The Board photo 5B21C81178_A-218.jpg

 The specs before editing :https://drive.google.com/file/d/1ystxNsnJcQKjC58OjOYpGe_TVQsi0GAR/view?usp=sharing

Screenshot 2022-03-23 214940.png

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