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What do the various USB charge-while-sleeping modes mean? My new laptop has these sleep while charging modes:

  • mode 4
  • mode 3
  • mode 2
  • mode 1

The list box doesn't tell me what these modes mean or do. I noticed that my iPhone is charging really slowly in mode 4. What is it going to do to my power consumption if I change it to something like mode 1 or mode 2?

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Possibly related question with links to further reading: superuser.com/questions/71835/… – outsideblasts Dec 5 '09 at 20:17
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