A:Answer I didn't measure them, so if you're wanting exact lengths, I can't help. Sorry, but I'm not going to open my box back up to measure them.
That being said, there is quite a bit of real estate inside my box (full size ATX, not micro or mini), and I had no problem reaching everything from the front to the back (the power supply is in the upper back corner).
If you need exact measurements, go to the store and take it to the Geek Squad desk. If they can even figure out how to take it out of the box, measure all the cords while it is on their counter. PLEASE post your results back here so some other poor soul can benefit from your work.