Acer AcerPower Desktop Tower Computer, Windows 7 Professional, 64bit OS, Celeron D 3.2GHz, DVD+-RW Microsoft Windows 7 Professional pre-installed Intel Celeron D 3.2 GHz processor 512 MB RAM (expandable up to 2 GB) 80 GB hard drive DVD&amp;amp;#177;RW drive No floppy drive Two (2) PCI slots Acer AcerPower Celeron D 3.2 GHz Tower System General Features: Intel GMA3000 graphics Integrated audio Integrated Ethernet Motherboard expansion slots: