Let's say it is a bit incovenient to drag a laptop + psu to bed every evening. Such a simple task as reading a book becomes much more complicated. My verilux lamp works from USB connector but I have never used it so far. No cables in my bed when I read a book. Just sony reader and a lamp clipped to the top of the reader. The ultimate goal is to achieve the same(or better) comfortable environment as I had when I was reading paper books. If I had to bring laptop psu and cable to bedroom each time I wanted to read a book, it would be ....unacceptable
