HP Compaq 6005 PRO SFF Desktop PC - PHENOM B55/3.0GHz-6M/4GB(2X2GB)/160GB/DVDRW/WIN7PRO AMD Phenom II X2 B55 3.0GHz 4GB DDR3 160GB HDD DVDRW drive AMD Radeon HD 4200 Integrated HD Audio 10/100/1000 Gigabit Ethernet Front: 4 USB 2.0 ports, Microphone/headphone jack. Rear: 6 USB 2.0 ports, Serial Port, VGA, DisplayPort, PS/2 mouse and Keyboard, RJ-45 (LAN), 3.5mm audio in/out jacks. Windows 7 Professional 32-bit