NB Family name:Aspire Product model code:E1-510CPU Family name:Celeron Quad Core CPU Model Number:N2920Clock speed:1866 MHzScreen size:15.6" Screen LED backlight:Yes Native resolution:1366x768 Screen type:Non-Glare Memory (RAM):4GB Max memory (RAM):8GB Memory type:DDR3 Free memory slots:0 HDD Capacity:500GB Rotation speed:5400 rpmODD type:None VGA card:Intel HD graphicsIntegrated LAN:Gigabit KB language:ENG Battery type:Battery LI-ION 4-cell 2500mAh Input/Output connectors: 15pin D-sub1 DVI0 HDMI1 S-Video0 Audio-Out1 USB 2.02 USB 3.01 eSATA0 FW/13940 DC jack for AC addapter1 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 Dimensions Width381,6 mm Height25,3 mm Depth256 mmUnit Net Weight:2,35 kgUnit Gross Weight:3,01 kg