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Not all pins are needed in a given configuration.

Another possible scenario would be if your motherboard requires a 24 pin adaptor and the power supply only has a 20 pin interface. In this situation, the 20 pin could be plugged in and might provide adequate power to operate the basic components to make the system turn on and run. However, you will have power deficiencies most notably to the CPU. This could in turn be harmful to CPU, motherboard, power supply, etc. by components demanding more power than the available conduits can provide.

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15y ago

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