HP Compaq DC7900 Small Form Factor - Features: - Intel Core 2 Duo E7500 2.93GHz Processor - 2GB DDR2/800 MHz Dual Channel RAM - Front - DVD Multi Recorder LightScribe, 2x USB, Mic And Headphone Sockets. Back - Audio Out, PS/2 Mouse And Keyboard, 9-Pin Serial, VGA, DP, RJ-45, 6x USB Sockets - No Hard Disk Drive