Optiplex 380 DT, Pentium Dual Core E5800 (3.20Ghz,800MHz,2MB,65W), Memory : 2GB (1x2GB) 1333 MHz 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