The number of times I went on a week-long vacation as a kid only to find out I didn't have just the right cable to charge my whatever-portable-entertainment thing was way too high. Oops, not the right cable for the portable DVD player. Oops, not the proprietary Gameboy SP adapter. Oops, not the right cable for the camera. Oops, not the right cable for the Genesis Nomad.

Forget that noise. Now its all one cable. Laptop, game console, phone, wireless headphones, reading device, even things like flashlights and lanterns. All one cable, can all work with the same extra battery packs and the same power cords.