Off-Topic: use laptop only as USB power supply

Owen DeLong owen at
Fri May 21 03:57:08 UTC 2010

Every Mac laptop I have ever used has powered the USB ports whenever connected to AC or airline power, regardless of whether asleep or awake.

Not sure if it will power USB ports when powered, but, shut down or not. Have not tested that.


On May 20, 2010, at 5:52 PM, Paul Timmins wrote:

> I think the last dell business notebook I had my hands on has a bios setting that enables usb power when the laptop is off and plugged into the AC adapter.
> It's not on by default.
> If you have one, you may want to check.
> -Paul
> Matthias Flittner wrote:
>> Hash: SHA1
>> Hi there,
>> I'm not sure if anyone out there has an answer to this insane question:
>> But is it possible to use my laptop only has power supply via usb for my
>> mobile phone. Yes you heard right: I don't want to boot an operating
>> system I only want to charge my battery of my mobile phone. No fan should
>> be powered on. I only need voltage on the USB ports.
>> Any suggestions? ;)
>> best regards,
>> FliTTi
>> Version: GnuPG v1.4.10 (MingW32)
>> Comment: Using GnuPG with Mozilla -
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>> =k+ae
>> -----END PGP SIGNATURE-----

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