You are buying:
HP ProBook 6550b i5-M450 2.40GHZ, 2GB Ram, NO HDD
Passed PC Check, Battery Holds a charge But I do not know how long.  No Further Testing has been done.  Normal wear..Scratch and scuff on lid and bottom.  See Pics.  Due to limited testing this item is being sold AS-IS..No ac adapter is Included.
Thank You.
Have a Great Day!