Re: Different Apple machines, different USB behavior [ was: Re:
On Fri, May 25, 2007 at 07:17:44PM +0200, Wolfgang Pfeiffer wrote:
> Powerbook5,7 [ ... ]
> Reply-To:
> In-Reply-To:
> X-Spoken-Languages: en, de
> X-URL: http://www.wolfgangpfeiffer.com
>
> Hi Sven, Hi All
>
> On Thu, May 24 2007, at 07:27 +0200, Sven Luther wrote:
> > On Thu, May 24, 2007 at 01:16:24AM +0200, Wolfgang Pfeiffer wrote:
> > > On Thu, May 24 2007, at 00:27 +0200, Wolfgang Pfeiffer wrote:
> > >
> > > > I have lots of problems connecting hardware to an AluBook 5.8. For both
> > > > USB and Firewire enclosures.
> > >
> > > In order to not exaggerate: At least some USB enclosure works, provided
> > > I connect it with 2(!) connectors to the alubook, and provided I plug
> > > those in some correct order, whatever this is ...
> >
> > Well, this is the normal power limitation of the USB device, nothing to
> > be worried about. An USB connected external disk powered from only the
> > USB connector *CANNOT* work.
>
> I've tested it, and all I can say by now: No. With "No" I'm referring
> to the part where you say it "*CANNOT* work"
>
> Short version first:
> I need some external power supply for a USB disk enclosure if I want
> to connect the disk inside to the newer Alubook 5,8. I don't need the
> power supply if I connect the same disk enclosure with the same cable
> to my old Titanium IV.
Sure, apple used to over-power the USB connectors on the older ibooks
and powerbooks, which is why it works. I don't know why they stopped
doing this later on, but apparently they did.
Friendly,
Sven Luther
Reply to: