HP Pro Slimline 3300 SFF Desktop PC Core i5-2400@3.10GHz 4GB RAM 500GB HDD Win 7

Used. has general signs of normal wear and tear which may include scratches, scuffs, dirt, sticker residue

Tested, working 

Windows 7 Pro Sticker. windows 7 Pro re-installed and activated.

30 days money back  or replacement warranty