How to check if I'm having AcBel or Delta power supply ?

Discussion in 'Mac Pro' started by Spacedust, Oct 16, 2012.

  1. Spacedust macrumors 6502a

    May 24, 2009
    I know that Delta power supplies make a click sound when electricity cable is connected. My old Mac Pro 2008 does that, the new one doesn't. Does it mean I got AcBel power supply ?
  2. DanielCoffey macrumors 65816


    Nov 15, 2010
    Edinburgh, UK
    My 2010 clicks when switched on. Why is it an issue?
  3. Spacedust thread starter macrumors 6502a

    May 24, 2009
    Mine too, but what about if you plug cable to it and do not power it on ? Is there any sound then ?

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