On Mon, 14 Aug 2006, Tony Smolar wrote:

> >It could a problem not so much with the cable itself as with the 
> >termination electronics at the point where the cable joins the device.
> >  
> >
> Hmm, that got me thinking...    USB headers on motherboards usually come 
> in pairs.    I have two frontal ports + this card reader.   The front 
> ports are paired to a header, but the card reader is not paired with 
> anything, could that cause termination problems?   There's no way to 
> configure termination on the device itself.

The card reader might be paired with something on a different side of the
case.  However I don't think any sort of termination is needed for
unconnected ports in general, although I might be wrong about that.

Just because there's no way to configure the termination on the device, 
that doesn't mean it is correct.  But you would need more electronics 
engineering skills than I have to be able to test or fix it.

Alan Stern


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