This USB 2.0 cable connects your iPhone or iPod - directly or through a Dock to your computer's USB port for efficient syncing and charging or to the Apple USB Power Adapter for convenient charging from a wall outlet.
As my original iPhone USB cable stopped working I needed a new one and ordered one from the Marketplace. It is an exact replacement and if, like me, you have a first generation iPhone, this fits the bill perfectly.
My old lead had started to break and I thought I would buy 2 of these so I have 1 in reserve to back up if it happens again! I know these leads don't last forever so I want to be prepared for any future problem. Very happy it works excellent and just threw away broken one.