HP ProBook 6550b
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    Acer Aspire 4820 TimelineX
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    General Class Standard Laptop Portable Laptop
    Operating Sistem Windows XP Windows 7
    Body Dimensions 14.62 in x 1.37 in x 9.76 in13.50 in x 1.00 in x 9.60 in
    Weight 2.49 kg (5.5 lb)2.22 kg (4.9 lb)
    Color Black, GrayBlack
    Display Size 15.6 inches14 inches
    Resolution 1366x768
    LED YesYes
    3D NoNo
    Processor Name Intel Core i3 350MIntel Core i3 350M
    Frequence 2.26 GHz2.26 GHz
    Cores 2 per processor2 per processor
    Cache L3 Cache:3.0 MBL3 Cache:3.0 MB
    Arhitecture 64-bit64-bit
    Technology 32nm32nm
    Chipset Intel HM57Intel HM55 Express
    TDP 35W35W
    Graphics Type Dedicated card, Integrated cardIntegrated card
    Name AMD / ATI Radeon / Mobility Radeon 540vIntel HD Graphics
    Memory 512 MB
    Name Intel HD Graphics
    Memory Capacity 8 GB4 GB
    Max Capacity 8 GB8 GB
    Max Capacity Per Slot 4 GB
    Type DDR3-1333 MHzDDR3
    Slots 22
    Total Slots 22
    Storage Capacity 160 GB
    RPM 7200RPM5400RPM
    Type Hard Disc (HDD)Hard Disc (HDD)
    Interface SATA (SATA type: 3Gbit/s)SATA
    Optical Type Reading support: CD DVD
    Writing support: CD DVD    		Reading support: CD DVD
    Writing support: CD DVD
    Features Disc labeling:Yes (LightScribe)
    Networking LAN 1000 mbps1000 mbps
    Wifi Yes (802.11b, 802.11g, 802.11n)Yes (802.11b, 802.11g, 802.11n)
    Bluetooth Yes Version:2.1 EDR:YesYes Version:3.0
    Modem YesNo
    Infrared NoNo
    Wimax NoNo
    UWB NoNo
    Interfaces USB 3 Version:2.04 Version:2.0 Powered while off:No
    HDMI Yes
    VGA YesYes
    LAN RJ-45RJ-45
    ESata Yes (1)No
    FireWire Yes (1)No
    Expansion Slot ExpressCard (54)
    Microphone Microphone in 3.5mmMicrophone in 3.5mm
    Headphone Audio out 3.5mmAudio out 3.5mm
    Card Reader YesMemory Stick, Memory Stick PRO, SD, xD-Picture Card, MMC
    Multi Purpose DriveBay NoNo
    Docking Station Port YesNo
    Other DisplayPortDigital audio output
    Devices Keyboard Dedicated media playback controls
    Pointing Touchpad (2 Buttons)Touchpad (2 Buttons, Multitouch)
    Camera YesYes, 1.3 megapixels
    Microphone NoYes
    Security Features Kensington lock
    Baterry Cells 6 cells6 cells
    Type Li-IonLi-Ion
    Capacity 51 WHr6000 mAh
    Autonomy 8 Hours
    Other Adapter power consumption:Typical: 65 W

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