HP Deskjet printer buying guide

Unboxing my HP Deskjet 3050 all-in-one printer. I purchased this at Wal-Mart for . My favorite feature of this printer is its wireless printing. This printer is compatible with all operating systems, including Mac Lion. Setup is very quick and easy.

I have an hp photosmart C4480 printer for my laptop, and i have the wire that plugs in from the laptop to the printer, and the power adapter box thing that connects to the printer, but there’s another wire that plugs into the box that goes into the wall, and i’m missing it. is there any way i can make my printer work without having it plugged into the wall? or is there somewhere i can buy the cord?
thanks.