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The motherboard does not connect the power supply to the peripherals. The power is supplied directly to most peripherals such as HDDs and CD drives by cables from the power supply. Some special expansion cards, such as network cards, get enough power from the motherboard through the PCI slot to function.
The expansion cards will not function properly without the right amount of power and the motherboard can only give so much power though the PCIe slots. Some expansion cards such as graphics cards require a lot of power so it is easier to get that power directly from the PSU.
4 Pin Aux connectors are used by some video cards to provide additional power to them via the power supply.
Is to supply additional power for PCIe video cards Original answer SATA data cables. To provide additional wattage for PCIe video cards
Yes. Depending on the design, the power supply can provide any voltage desired.
yes
To provide power to the power supply which in turn powers the motherboard.
A dual power supply refers to a system that provides two separate power sources to a device or circuit. This setup offers redundancy and can help improve reliability in case one power source fails. It is commonly used in critical systems where uninterrupted power supply is necessary.
If the power supply still works then yes.
A power supply unit (PSU) provides power to all the components in the computer. Typically that would include the system board, the processor, the video cards, and storage devices.
yes
To add more memory cards you do not need a larger power supply. To add more hard drives for more memory storage space you might need to increase power supply.