ATX power supply units provide various advantages compared to its predecessors AT format. The I / O connections are now integrated and the power connector on the motherboard is also polarized. There is a voltage control, no outgoing voltage from the power cable any more, which leads through the computer case.
However the I / O components is defective, they can not be easily replaced because they are on the motherboard. Also, the computer consumes electricity even in standby mode. To turn off completely, it can be done through the main switch.
Many modern PC power supplies in ATX format are now able to work with different electrical networks. Some must be activated manually, but this is dangerous, if wrong in doing this the PC power supply will be damaged forever. Another device can automatically adjust, and allow the AC voltage from 100 volts to 240 volts.
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