The function of the power supply is to convert wall current to the correct current for the computer and distribute power to all the internal computer components.
A PSU in a system unit is the power supply unit. It provides well-regulated power for the computer and its peripherals.
The hardware unit that contains the CPU, the RAM, a hard disk, and a power supply is called the "motherboard."
The name tells you - it supplies power to the device it is part of.
System unit
is an embedded circuit or stand alone unit the function of which is to supply a stable voltage to a circuit or device that must be operated within certain power supply limits .
System Unit manufacturers usually include the power supply as part of the purchase because it prevents users from selecting too many devices (drives and cards) for the size of the case. They system unit case is usually provided with a power supply capable of running the number of devices its given size will support.
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This unit will require the PWM power supply system
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.
power supply HDD floppy disk drive
Power Supply
Power Supply