Processor      - AMD Phenom II Quad-Core Mobile Processor N930 (2MB L2 cache, 2.0GHz) or AMD Phenom II Triple-Core Mobile processor N830 (1.5MB L2 cache, 2.10GHz) or AMD Turion II Dual-Core Mobile Processor P520 (2MB L2 cache, 2.30GHz) or AMD Athlon II Dual-Core Processor P320 (1MB L2 cache, 2.10GHz)Chipset - AMD M880GMemory - Up to 4GB (2GB installed in each of two memory slots) DDR3 1066 SDRAM- User upgradeable up to 8GB (one 4GB memory card in each slot)*If upgrading after initial purchase, one or more of the memory cards provided with the system may have to be replaced with optional larger memory cards in order to achieve the maximum capacity.Storage     - Up to 500GB* SATA hard drive, 5400RPM- Integrated variable-speed Blu-ray Disc drive / Super-Multi drive combo or- Integrated variable-speed Super-Multi drive- 5-in-1 card reader for optional MultiMediaCard, Secure Digital card, Memory Stick, Memory Stick PRO or xD-Picture CardOptional external USB 1.44MB* diskette driveVideo - Acer CineCrystal HD+ 17.3” (1600 x 900) high-brightness (220-nit) TFT LCD- 16:9 aspect ratio, 8ms response time, 60% color gamut, LED backlight, mercury-free- Integrated ATI Radeon HD 4250 graphics- Microsoft DirectX 10.0 support- or- Discrete ATI Mobility Radeon 5650 graphics- Microsoft DirectX 11.0 support- Up to 16.7 million colors- Acer Video Conference with integrated Acer Crystal Eye webcam, 1280 x 1024 resolution- MPEG-2 DVD, WMV9/VC-1 (Windows Media Video 9, VC-1 standard), H.264/AVC decoding- VGA and HDMI (High-Definition Multimedia Interface) with HDCP (high-bandwidth digital-content protection) ports- Support for simultaneous display on notebook LCD and external monitorAudio    - Two integrated Acer 3DSonic stereo speakers- Integrated microphone- Microsoft DirectSound compatibilityInterface Ports - DC-in- RJ-45 LAN- VGA- Headphones/speaker/line-out- Microphone- HDMI (High-Definition Multimedia Interface) with HDCP (high-bandwidth digital-content protection)- Four USB 2.0Card Slot - 5-in-1 card reader for optional MultiMediaCard, Secure Digital card, Memory Stick, Memory Stick PRO or xD-Picture CardCommunications     - Acer InviLink Nplify network connection supporting 802.11b/g/n wireless LAN, Acer SignalUp technology for enhanced antenna efficiency, WI-FI CERTIFIED- Gigabit LAN, Wake-on-LAN ready- Acer Video Conference with integrated Acer Crystal Eye webcam, 1280 x 1024 resolutionIncluded Software     - Acer Crystal Eye- Acer eRecovery Management- Acer Identity Card- Acer Registration- Acer Updater- Adobe Acrobat Reader- Adobe Flash Player- CyberLink PowerDVD*- eSobi- Google Toolbar- McAfee Internet Security Suite (trial version)- Microsoft Office (60-day trial)- Microsoft Silverlight- Microsoft Works- Norton Online Backup- NTI Media Maker*- Skype- Windows Live Essentials*OEM, not full-featured, version.User Interface     - 103-key Acer FineTip keyboard, inverted T cursor layout, independent standard numeric keypad, hotkey controls, international language support, 1.8mm minimum key travel- 11 function, four cursor, two Microsoft Windows keys- Play/pause, stop, previous, next media control keys printed on keyboard- Multi-gesture touchpad supporting two-finger scroll, pinch, rotate, flipDimensions & Weight -  16.3” (415.0mm) W x 10.8” (275.0mm) D x 1.1” - 1.4” (27.1mm – 34.3mm) H- 7.3 lb. (3.3kg)Size and weight may vary depending on configurationPower     Aspire 7551 models:- 65-watt AC adapter- Six-cell lithium ion battery: up to 3.0 hours life depending on configuration and usageAspire 7551G models:- 90-watt AC adapter- Six-cell lithium ion battery: up to 2.7 hours life depending on configuration and usage, 2.0 hours recharge time with power off, 80% charge in 1.0 hourSecurity Features     - User, administrator and hard drive BIOS passwords- Kensington lock slot It is highly recommended to always use the most recent driver version available.Do not forget to check with our site as often as possible in order to stay updated on the latest drivers, software and games.Try to set a system restore point before installing a device driver. This will help if you installed a wrong driver. Problems can arise when your hardware device is too old or not supported any longer.

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