Same thing happens if you are on a windows laptop. Chantel.
--- On Sun, 3/15/09, Jacob Schmude <j.schm...@gmail.com> wrote: > From: Jacob Schmude <j.schm...@gmail.com> > Subject: Re: charging PDA's > To: macvisionaries@googlegroups.com > Date: Sunday, March 15, 2009, 3:26 PM > Hi Scott > Very true, this is why all of my stationary USB hubs are > always self- > powered by their own AC adapter. There's only so much > power a USB port > can provide. > One very nice feature of OS X is that it will let you know > when this > occurs. When a USB device cannot draw the required amount > of power, > you'll get a nice little dialog to that effect. > You'll also get one if > for some reason the device draws too much power or if the > USB port > surges. > > > On Mar 15, 2009, at 15:16, Scott Bresnahan wrote: > > > > > Hi, > > > > There is a tidbit of Mac and USB info to share here > though. Low > > voltage in a USB series can cause devices not to > charge or function > > properly. What I mean by a series is a chain of > connected USB > > devices that run off a single USB powered bus. So for > example, if > > you have a power hungry device plugged into the > keyboard, along with > > a mouse, depending on the voltage requirements of the > USB device, you > > may not have enough to charge it or allow it to > operate properly. > > Note that some USB drive enclosures have double > USBBplugs. This is > > solely to draw extra power from the USB bus in order > to power the > > hard drive. > > > > In general, My suggestion is to run such things off of > a powered USB > > hub and avoid daisy chaining USB devices other than > keyboard and > > mouse whenever possible.. > > > > And this applies to any system. > > > > Best, > > Scott > > > > > > > >> hi does one need i wonder, to be using a iwndows > >> system to charge a > >> windows mobile PDA device? > > > > -- > > --Scott > > > > > > > The major difference between a thing that might go > wrong and a > thing that cannot possibly go wrong is that when a thing > that cannot > possibly go wrong goes wrong it usually turns out to be > impossible to > get at or repair. > --Douglas Adams > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "MacVisionaries" group. To post to this group, send email to macvisionaries@googlegroups.com To unsubscribe from this group, send email to macvisionaries+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/macvisionaries?hl=en -~----------~----~----~----~------~----~------~--~---