https://techinstyle.asus.com/hub/notebook-pc

    U31SD

    ASUS recommends Windows 10 Pro.
    Model Number : N50 >
    • Processor
      Intel® Core™ i5 2410M Processor
      Intel® Core™ i3 2310M Processor
    • Operating System
      Windows 7 Ultimate
      Windows 7 Professional
      Windows 7 Home Premium
      Windows 7 Home Basic
      This version contains all product updates (SP1)
    • Chipset
      Intel® HM65 Express Chipset
    • Memory
      DDR3 1333 MHz SDRAM, 2 x SO-DIMM socket for expansion up to 8 GB SDRAM
    • Display
      13.3" 16:9 HD (1366x768) Color-Shine (Glare-type)
    • Graphic
      Integrated Intel® GMA HD
      NVIDIA® GeForce® GT 520M with 1GB DDR3 VRAM
    • Storage
      2.5" SATA
      750GB 5400/7200RPM
      640GB 5400RPM
      500GB 5400/7200RPM
      500GB 7200RPM With 4 G SSD
      320GB 5400RPM
    • Card Reader
      3 -in-1 card reader ( SD/ MS/ MMC)
    • Camera
      0.3 Mega Pixel Fixed web camera
    • Networking
      Integrated 802.11 b/g/n or 802.11 b/g
      Built-in Bluetooth™ V2.1+EDR (Optional)
      10/100/1000 Base T
    • Interface
      1 x Microphone-in jack
      1 x Headphone-out jack (SPDIF)
      1 x VGA port/Mini D-sub 15-pin for external monitor
      3 x USB 2.0 port(s)
      1 x RJ45 LAN Jack for LAN insert
      1 x HDMI
    • Audio
      Built-in Speakers And Microphone
      Altec Lansing® Speakers
    • Battery
      8Cells 5600 mAh 83 Whrs
      6Cells 4400 mAh 47 Whrs
    • Power Adapter
      Output :
      19 V DC, 4.74 A, 90 W
      Input :
      100 -240 V AC, 50/60 Hz universal
    • Dimensions
      32.8 x 23.3 x 2.54 ~2.85 cm (WxDxH)
    • Weight
      1.78 kg (with 6 cell battery)
    • Security
      Kensington lock
      LoJack
      BIOS Booting User Password Protection
      HDD User Password Protection and Security
    • Manufacturer Warranty
      2-year limited International hardware warranty. *different by country
      On-line problem resolution through web interface (BIOS, Driver update)
      OS (Windows® 7 ) install/uninstall consultation
      Bundled software install/uninstall consultation
      ASUS software supporting
    • Note
      • ASUS cannot guarantee memory compatibility with other brands.
      • 1GB is one billion bytes. 1TB is one trillion bytes. Actual formatted capacity may be less. Hard drive capacity may be reserved for system recovery, while SSD partitions may be reserved for data storage, or for operating system sleep mode functionality to reduce power consumption.
      • Actual WLAN performance may vary considerably based on hardware configuration, software, power management settings, environmental conditions, wireless connectivity and other factors. Maximum battery capacity normally decreases with time and use.
      • Card reader is SDXC compatible.