Power Drain of Mouse Wireless Receiver?

Discussion in 'Mac Accessories' started by jason.siegel, Aug 3, 2011.

  1. jason.siegel macrumors 6502

    Joined:
    Jun 15, 2011
    #1
    I have a Logitech Wireless Mouse M305 and I'm wondering about the power drain of the wireless receiver on my new Air. How much juice is it pulling in order to power the USB peripheral?

    Thanks.
     
  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
    Next to nothing. It's so small, I doubt you could measure it. I have the same receiver on all my computers.
     
  3. TheIntruder macrumors 6502a

    TheIntruder

    Joined:
    Jul 2, 2008
    #3
    The USB spec calls for a typical port to supply 500mA of current at 5 volts.

    Ohm's Law tells us this will allow for a theoretical maximum of 2.5 watts.

    The small radio in the receiver will not require full power. The USB section in System Profiler will tell you how much current it asks for.
     
  4. alust2013 macrumors 601

    alust2013

    Joined:
    Feb 6, 2010
    Location:
    On the fence
  5. jason.siegel thread starter macrumors 6502

    Joined:
    Jun 15, 2011
    #5
    Unfortunately I can't make much of this, but thanks.

    Thanks. :)
     

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