I'm going to be traveling to my elder relatives homes and scanning their pictures which will range from old black to modern color. I have a Power Book with USB1 and Firewire. I'm looking for a slim, portable scanner that is powered by my laptop and does not need to plug into the wall.
I will not be doing more than 10-15 pictures at a given place so speed is not too much of a factor but I'm a graphic designer so image quality is important.
Any Suggestions?

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