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Re: [LUG] Problems with my digital camera

 

On Wed, 15 Nov 2006 19:30:12 +0000
Julian Hall <lists@xxxxxxxxxxxx> wrote:

> The other issue with USB is the power consumption of the device.  
> Probably not an issue in this case as you're only using USB for data not 
> power, however not all USB sockets are implemented the same way.  The 
> specification says that USB should be 500mA.  Some motherboard 
> manufacturers take this to mean 500mA across the USB bus no matter how 
> many sockets there are, hence four sockets gets 500mA/4 = 125mA each - 
> not what the doctor ordered.  Mark has a good point about the front USBs 
> also although that can be down to the case/motherboard combination.  If 
> the front USBs are from a proper header on the motherboard then there is 
> only the case to worry about.
> 
> Anyway it looks like you have a couple of options now with the offer of 
> a reader to try and the extension cable.  It might be an idea to try 
> both.  If the reader won't work in the front port either then you *know* 
> it's the port and there would be no point getting your own reader to use 
> (other than the benefits I mentioned earlier).  If it works in the front 
> port, then it probably just doesn't like your camera.
> 
> So three options (my maths skill is famous - I just thought of one :):
> 
> USB extension cable
> Card reader
> USB hub (internal or external)
> 
> An internal would give you up to 4 USBs on the front of the case, and 
> will be better engineered than the current port you are using.  It would 
> mean opening the box and tinkering though - depends how brave/technical 
> you feel.  An external would just take up one back USB port and sit on 
> top of the case, ready for you to plug in whatever device you need to.  
> Bear in mind that if it's the way the camera communicates that is the 
> problem, no cable or hub is going to make any difference.  In that case 
> you'd be left with sticking as you are, or buying a card reader.
> 
> Alternatively you could just stick with the (albeit irritating) routine 
> you already know works.
> 
> Kind regards,
> 
> Julian
> 
Thanks for all that. As I said in reply to another email, I plan to
visit the people who built my computer last May. I will have several
questions for them and I will let the group know the outcome.

Neil Winchurst








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