Optiplex 780 MT, Intel Core 2 Duo E8400(3GHz,1333MHz,6MB), Memory : 2GB(1x2GB) Non-ECC,1333MHz DDR3, Hard Drive : 500GB Serial ATA II (7200RPM) 3.5in, Optical Drive : 16X DVD+/-RW, Internal Speaker, Dell Optical (Not Wireless) Scroll USB (3 buttons scroll) Black Mouse, US/Euro (QWERTY) Dell QuietKey USB Keyboard Black, English Genuine Windows 7 Professional (64 BIT), Next Business Day