difference in the two wall plugs?

Discussion in 'MacBook Air' started by iimac, Sep 17, 2013.

  1. iimac macrumors member

    Sep 1, 2008
    Hi what's the different between connecting the charger directly into the wall plug or using the ac power cord?
  2. 840quadra Moderator


    Staff Member

    Feb 1, 2005
    Twin Cities Minnesota
    I assume you are talking about the 2 prong click in, versus the 3 prong click in with the cable?

    The difference is the 3 prong cable will be grounded, the added benefit is static electricity would be passed through it without going through the laptop's power system / circuitry.
  3. iimac thread starter macrumors member

    Sep 1, 2008

    so would you recommend using the 3 prong when possible as oppose to the two?
  4. grayskyz macrumors regular


    Nov 21, 2008
    Los Angeles
    The difference is 4.9 feet of grounded extension cable. There's not much benefit other than that. I use them both regularly but since I got the plug bug I've mostly been using it without the extension so I can do this: http://twelvesouth.com/products/plugbug/

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