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I am pretty sure M.2 uses 3.3V exclusively, and depending on the implementation, RAM sometimes gets its power from down regulated 3.3V as well.

Though you do have a good point, nobody misses -12V and -5V.

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Yes, there's actually a lot of stuff that uses 3.3 V, e.g. anything connected to smbus. But none of them connect directly to the PSU, so there is no need for the PSU to do it.

> nobody misses -12V

Some of us (masochists) actually like RS-232!

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