HP recommends Windows Vista Home Premium. Specifications Processor Operating System Chipset Graphics Display Panel Standard Memory Hard Drive Optical Drive Networking/Wireless External Card Expansion Media Card I/O Ports Security Keyboard/Touchpad Audio/Remote Control Battery & Power Optional Accessory Software WebCam/MIC Approximate Weight Dimension (W x L x H) HP TouchSmart tx2 Notebook PC AMD Athlon X2 Dual-Core Processor for Notebook PCs QL-65 (2.1GHz, 1MB L2 Cache) AMD Athlon X2 Dual-Core Processor for Notebook PCs QL-67 (2.2GHz, 1MB L2 Cache) AMD Turion X2 Dual-Core Mobile Processor RM-74 (2.2GHz, 1MB L2 cache) AMD Turion X2 Dual-Core Mobile Processor RM-75 (2.2GHz, 1MB L3 Cache) AMD Turion X2 Dual-Core Mobile Processor RM-77 (2.3GHz, 1MB L2 Cache) AMD Turion X2 Ultra Dual-Core Mobile Processor ZM-85 (2.3GHz, 2MB L3 Cache) AMD Turion X2 Dual-Core Mobile Processor ZM-86 (2.4GHz, 2MB L2 cache) AMD Turion X2 Ultra Dual-Core Mobile Processor ZM-87 (2.4GHz, 2MB L2 Cache) Genuine Windows Vista Home Premium1 with Service pack 1 (SP1) pre-installed ATI RS780M and SB700 ATI Radeon HD 3200 Graphics with 64MB Display Cache Memory 12.1 Diagonal WXGA High-Definition* HP LED BrightView Widescreen Display (1280 x 800) with Integrated Touch-screen Two user-accessible SODIMM slots, DDR2 - upgradeable to 4GB* Hard drive of up to 500 GB; 160, 250, 320, 500GB - 5400rpm, 250, 320GB - 7200rpm Lightscribe Super Multi 8X DVD+/-RW with Double Layer Support, Super Multi 8X DVD+/-RW with Double Layer Support High speed 56K modem, integrated 10/100/1000 Gigabit Ethernet LAN, 802.11b/g, 802.11a/b/g/n wireless LAN with/without Bluetooth ExpressCard/34 Slot 5-in-1 integrated Digital Media Reader* for Secure Digital cards, MultiMedia cards, Memory Stick, Memory Stick Pro, or xd Picture cards VGA, USB 2.0 (3), RJ-11, RJ-45, Stereo headphone with SPDIF, Additional headphone jack, Expansion Port 3, Microphone in, Consumer IR Kensington MicroSaver lock slot; Power-on password; Accepts 3rd party security lock devices; Integrated fingerprint reader (configurable) 101 key compatible keyboard with 3 Quick Launch Buttons, Touch Pad with On/Off button and dedicated vertical Scroll Up/Down pad Altec Lansing speakers, SRS Premium Sound, HP Mini Remote Control Choice of 4 cell, 6 cell and 8 cell Li-Ion battery; Power 65W AC adapter HP TX-series notebook stand, HP xb3000 notebook expansion base, HP QuickDock HP Total Care Setup, HP Advisor (selected countries only)++, HP Wireless Assistant, HP Help & Support Center, HP Software Update, Adobe Acrobat Reader, Sun Java VM, Cyberlink DVD Suite, HP MediaSmart 2.0, HP Games Powered by Wild Tangent (selected countries only), Spore Creature Creator (selected countries only), Macromedia Flash Player, Adobe Shockwave Player, Muvee Reveal (with 20 day trial full version), Symantec Norton Internet Security 2009 Consumer (60days live updates), Motorola SoftStylus (selected countries only)+, User Guide Documentation, Digital Persona Finger Print Reader for Consumer Notebook* Microsoft Works^, Office Trial: Microsoft Office 2007 Home/Student (60 day Trial)^, Office Ready: Microsoft Office 2007 Pro (60 day Trial)^^ Center Microsoft One Note (Drop in the Box CD)[selected models only] HP Pavilion Webcam with Integrated Microphone 1.97kg with 4-cell battery (Touchscreen, digitizer, weightsaver) 30.6cm x 22.4cm x 3.26 (min) / 3.87cm (max) * For 4 GB memory configuration, up to 1 GB may not be available with 32-bit operating systems due to system resource requirements. ** Only available in notebook with Finger print reader. + Only available in China, Taiwan and Hong Kong. ++ Not available in China, Taiwan, Singapore, Japan, Korea. ^ Only available in Taiwan and Hong Kong. ^^ Available in all countries except Taiwan, Hong Kong and Japan. 1 Certain Windows Vista product features require advanced or additional hardware. Windows Vista Upgrade Advisor can help you determine which features of Windows Vista will run on your computer. To download the tool, visit www.windowsvista.com/upgradeadvisor. For Windows Vista system requirements, visit www.windowsvista.com/systemrequirements. Microsoft and Windows are U.S. registered trademarks of Microsoft Corporation. Windows Vista is either a registered trademark or trademark of Microsoft Corporation in the United States and/or other countries.