HP Pavilion a6707c Desktop,2.4GHz Pentium E2220, 4GB,500GB,DVD+/-R/RW,Integrated 10/100 Base-T networking interface, Memory card reader, Keyboard and mouse ,Windows Vista Home Premium Box Contents - HP Pavilion a6707c Desktop PC, HP optical mouse, HP multimedia keyboard, Software Bundle - Windows Vista Home Premium 64-Bit Edition with Service Pack 1, Microsoft Works 9, Microsoft Office Home and Student 2007 60-Day Trial, Norton Internet Security 2009 60-Day Subscription, 90-Day Warranty Intel Pentium E2200 2.4 GHz Processor 1 MB L2 Cache, 800 MHz Bus Speed 4096 MB DDR2 (PC2-6400) RAM Max - 4GB 500 GB (7200RPM) SATA Hard Drive