[SOLVED] Question about PSU to mobo connections ?

.valkyrie.

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Nov 29, 2018
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hi.

there are 2 mandatory connection from psu to motherboard.
1- 24 pin
2- 4 pin OR 8 pin....


i want to know the names.
i thought 4 pin called Atx but when i google it it shows something else.
or
8 pin is called eps?


also imagine a PSU have 2 of those 4 pin for cpu conector. i know for sure that i cant use two of them at same time, only 1 fit and other socket is different in shape. so i wonder why a Psu maker may add two of such 4pin in a psu? what may use another 4 pin ? i'm not talking about those 8pin+4pin overclock Z series motherboard. i say if a psu doesn't have 8 pin for cpu and just 2x 4 pin...
 

.valkyrie.

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Nov 29, 2018
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They are just power connectors (sometimes referred as motherboard power connector), not ports (usually used for data).

The 24-pin power connector is basically a 20-pin + 4-pin connector.

The 4-pin / 8-pin for CPU are auxiliary power connectors because not all CPUs need them.

and since 4pin conector, only work on half of the 8 pin on downside, and you cant use two 4 pin , because both of them only match one side and other side is different. could you please tell me what may require another such 4 pin? why a psu maker made 2x same 4 pin?