Optiplex 380 MT, Intel Pentium Dual Core E6700(3.20GHz,1066MHz,2MB,65W), Memory : 2048MB (2x1024MB) 1333MHz DDR3, Hard Drive : 500GB Serial ATA II (7200RPM) with NCQ and 16MB DataBurst Cache, Optical Drive : 16X DVD+/-RW Drive, Internal Dell Business Audio Speaker, Optical (Not Wireless), Scroll USB (3 buttons scroll) Black Mouse, US/Euro (QWERTY) Dell QuietKey USB Keyboard Black, English Genuine Windows 7 SP1 Professional (32Bit OS), 3Yr Basic Warranty - Next Business Day