On Oct 24, 2008, at 8:32 AM, Steve R wrote:

>
> At 11:50 PM -0400 10/23/08, Charles Davis posted:
>>  On Oct 23, 2008, at 8:23 PM, Steve R wrote:
>>
>>>  I've googled galore and not found an answer. Maybe the simplest way
>>>  to ask is, if I am using a USB hub for only one device, does the  
>>> USB
>>>  hub act as a pass-through cable extender so that it need not be
>>>  powered? Is there enough power coming from the internal USB port to
>>>  continue through the hub to the USB device,
>>
>>  possibly, but what is supposed to tell anything else plugged into  
>> the
>>  hub that it's NOT the one wanted, and to not draw any power?
>
> Is a USB hub with unpowered devices like lamps plugged into a power
> strip (USB hub) that is plugged into a wall receptacle (USB port)?
> The cords (cables) are always powered regardless of whether the lamp
> (device) is turned on?
>
I would expect so. The USB hub (non powered) is simply a 'pass thru'  
device. I.E. NO Smarts, as to what gets anything (signals, power,  
signal ground, whatever!. The Powered USB hub adds extra power to the  
hub connectors.


Chuck D.

> Steve R
> -- 

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