And found no cable from Samsung to charge and use the USB for other things. HOWEVER I do use the stock cable on many phones to connect to my PC and I can charge and sync over the one cable so for that it works.
Can you tell what you are trying to do?
Is the battery charging port also a USB port ?
The Verizon store I purchased it from said: "The Charging Line Can Be Separated & A USB Port Is Available" The charging line I got with my Samsung Gusto 3 does not have this feature.