Product model code:X451MACPU Family name:Celeron CPU Model Number:N2830 Clock speed:2166 MHzScreen size: 14" Screen LED backlight:Yes Native resolution:1366x768 Screen type:Glossy Memory (RAM):4GB Max memory (RAM):4GB Memory type:DDR3 HDD Capacity:500GB Rotation speed:5400 rpmODD type:None VGA card:Intel HD GraphicsGraphics memory:Integrated Integrated LAN:10/100 KB language:ENG/RUS Battery cells:3 cells Input/Output connectors: DVI0 HDMI1 S-Video0 Audio-Out1 USB 2.01 USB 3.01 eSATA0 Dock station connector0 Express Card0 RJ451 Wireless connections: Wireless LAN802.11b/g/n BluetoothYes Card Reader:SDMicrophone:Built-in Speakers:Yes Built-in WebCam:Yes Operating System:Microsoft Windows 8.1 Colour:Black Unit Net Weight:1,56 kgUnit Gross Weight:2,5 kg