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2 power cords??
- Thread starter Glennster
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They simply slide up and out of the brick. Use the extension for when you need more length or where you cannot use a wall wart style adapter.
Nope. The rounded metal knob that the cord attaches to is how the brick manages being grounded.
When would I want to use each type of cord?
It's pretty simple. Use the longer cord when the short one alone isn't long enough.
When would I want to use each type of cord?
@chabig's answer is of course correct - use the long one when you need a longer cord
Personally, I leave the long cord plugged in at home, with the "Brick" located for convenient access. When I'm going to be traveling overnight & want to take my MacBook Air, I slide the brick off the cord and put it in my overnight bag, where I keep the "duckhead" adapter, cord stays behind. Keeps me from having to reach down behind the dresser where the long cord is plugged in.
It probably has something to do with the compact form, since you can fold the prongs in. I guess there wasn't enough room for an elegant ground-prong solution.
The pins don't fold at all on the NZ one (they're angled, not parallel like a US plug) but there are still only two.