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  What's the normal tolerance of a power supply's output voltage?
  The description and solution of the question:


1. Power supplies follow guidelines of INTELS power supply design guides. The tolerance of output voltage on each output rail is shown below.

Output Rail
-5V (*)

2. (*)-5V had canceled by Intel ATX12V v1.3 Power Supply Design Guide.

3. Please note that voltages monitored by the motherboard and shown in the BIOS are often inaccurate. If output voltages shown in the BIOS are slightly out of the recommended range, it doesn't necessarily mean your power supply has a problem. For correct readings, we recommend users check output voltages with a voltmeter.

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