USB capacity

Discussion in 'iMac' started by Henrik9, Aug 7, 2014.

  1. Henrik9 macrumors newbie

    Joined:
    Aug 7, 2014
    Location:
    Denmark
    #1
    I have a iMac 27'' from 2013, how many peripheral's can I connect without problems with power-supply? I think about extra hub's, lamps, ventilators and so on?
    Best regards
    Henrik
     
  2. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    I think the design limit is 127 devices per USB port. Powerwise, your iMac will notify you when the power requirements have been surpassed and it will turn off the USB ports until they are reduced.
     
  3. Henrik9 thread starter macrumors newbie

    Joined:
    Aug 7, 2014
    Location:
    Denmark
    #3
    thank's a lot!!
     
  4. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #4
    Here is the info you want right from Apple. 900 mA (milliamps) at 5 V (Volts) is what the port can put out, so just do the math and add up your devices' power draw.
     
  5. Henrik9 thread starter macrumors newbie

    Joined:
    Aug 7, 2014
    Location:
    Denmark
    #5
    Thank You!

    #
     

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