We get so many of these, with only minor variations.

My google-fu is failing to find one single canonical QA we could use to close these against.

Can anyone find - or indeed write - one we can use as a comprehensive dupe-hammer?

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Examples, just from today…  
https://superuser.com/questions/1823042/please-guys-help-me-out-to-find-a-proper-adpater-for-my-laptop  
https://superuser.com/questions/1822954/using-macbook-pro-m3-with-a-90-watt-charger-instead-of-the-default-96-watt-power