Optiplex 390 MT, Intel Core i5-2400 (3.10GHz, 6MB), Memory : 2GB (1x2GB) 1333 MHz DDR3, Hard Drive : 500GB 3.5inch Serial ATA III (7.200 Rpm) Hard Drive, Optical Drive : 16XDVD+/-RW Drive, Internal Dell Business Audio Speaker, Optical (Not Wireless), Scroll USB (3 buttons scroll) Black Mouse, US/European (QWERTY) Dell KB212-B QuietKey USB Keyboard Black, Free DOS, 3Yr Basic Warranty - Next Business Day