The 5150 has a small box like power supply that plugs into a rectangular hole at the back of the printer. It will be obvious what power lead goes into it. The only other cable is the one to connected to to the computer. It is called a USB cable and again it will be obvious which end goes into the printer. the other end goes into a USB port on the laptop.
If you need to find the battery charger for the laptop, it will be marked with the same maker's name as the laptop.
t, March 2008