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I am using a Mac mini, 2012 model, without a UPS. My assumption is that Apple has designed a special adapter to rectify high voltage and low voltage. Is that right? If I use my Mac mini without a UPS and the power surges or is lost, will the hardware be affected by the high or low voltage? Should I use a UPS?

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Why would you assume Apple designed some kind of special adapter? And what do you mean by "low voltage"? Lower than normal input voltage? – David Schwartz Oct 2 '12 at 7:39
yes.. Lower than normal input voltage and also high input – Muthu Muthu Oct 2 '12 at 7:59
up vote 2 down vote accepted

The power supply of the Mac mini supports a range of voltages (100-240V AC), but surges or brown outs may still affect it.

As with any computer, if your local electricity supply is reliable, you don't need a UPS. If your local electricity supply is unreliable, you will benefit from installing a UPS. In this respect the Mac mini is no different from any other desktop computer.

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