Windows 7 32-bit EditionIntel® Celeron® Processor 900 39.1cm (15.4”) , Toshiba TruBrite® WXGA TFT High Brightness display Hard disk 500GB4MB, DDR2 RAM (800 MHz) Mobile Intel® GMA 4500M maximum life : up to 2h30min (Mobile Mark™ 2007) weight : starting at 2.49 kgW x D x H : 362 x 267 x 33.0 (front) / 37.7 (rear) mm Processor type : Intel® Celeron® Processor 900 clock speed : 2.20 GHz Front Side Bus : 800 MHz 2nd level cache : 1 MB Operating System / Platform Windows 7® 32-bit Edition, Microsoft Office and 2007 Roxio 2010 DVD Super Multi drive (Double Layer) compatibility : CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-R(DL), DVD-RW, DVD+R, DVD+R(DL), DVD+RW, DVD-RAM maximum speed : Read: 24x CD-ROM, 8x DVD-ROM/ Write: 24x CD-R, 4x CD-RW, 10x HS CD-RW, 24x US CD-RW, 8x DVD-R, 6x DVD-R (Double Layer), 6x DVD-RW, 8x DVD+R, 6x DVD+R (Double Layer), 8x DVD+RW, 5x DVD-RAM type : DVD Super Multi (Double Layer) drive Graphics adaptor type : Mobile Intel® GMA 4500M memory amount : up to 1,340 MB total available graphics memory with 3 GB system memory memory type : shared Expansion 2 × memory slots 1 × ExpressCard slot