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Subject: Re: BATTERY-FAQ and the FM
From: Chris Holt (
Date: 2003-06-12

On Thu, 12 Jun 2003 14:48:59 -0400, Neon John wrote:

>How's this?

>21. "Does the FMR charge its batteries through the USB port?"
>Yes, though slowly since USB is limited to 500 ma. Charging is reduced
>or eliminated when the FMR is connected through a passive hub. If a
>PCMCIA USB adapter is being used in a laptop or similar device, it is
>very important to connect the external power supply if one is provided.
>The PCMCIA port cannot supply sufficient power by itself. The Belkin
>USB 2.0 adapter, for example, comes with a "wall wart" power supply that
>can be plugged into the PCMCIA card.

It would be more correct here I think to say bus powered hub.
Active/Passive refers to re-clocking of the USB signal, as opposed to
whether the hub is bus or self powered. (and it usually applies to


Page was last modified "Jan 10 2012" The Rockbox Crew