HP 200 Business Windows 7 Professional Microtower Desktop (Intel Pentium Quad Core J2850 2.41 GHz Processor) Windows 7 Professional 64-bit comes installed; Runs all popular business applications with ease. Scalable, smart design: Experience a scalable, functional design that's easy to set up and easy to use. Take advantage of convenient connectivity with front access to USB ports and audio ports. Essential technology: Get reliable performance you can count on with the proven Intel Pentium processor, chipset and graphic. Relax and rely on HP: With innovative engineering and thousands of hours of testing, you get a reliable product that can go the distance. HP stands firm on its commitment to bring you durable desktops. 4GB DDR3 Memory  500GB HDD Storage  Optical Drive: DVDRW (reads and writes CDs and DVDs)  Intel HD Graphics  High Definition Audio Chipset  USB mouse and keyboard included