ASUS X552LD BIOS Processor Intel® Core™ i7 4500U Processor Intel® Core™ i5 4200U Processor Intel® Core™ i3 4010U Processor Operating System Windows 8.1 Pro Windows 8.1 Memory DDR2 MHz SDRAM, OnBoard Memory 4 GB , 1x DIMM socket, DIMM Up to 8 G Display 15.6" Auto HD (1366x768) Graphic NVIDIA® GeForce® GT 820M 1GB DDR3 VRAM Storage 320GB HDD 5400 500GB HDD 5400 750GB HDD 5400 500GB HDD 7200 750GB HDD 7200 Optical Drive Super-Multi DVD *1 Card Reader 3 -in-1 card reader ( SD/ SDHC/ SDXC) Camera VGA Web Camera *1 Networking Built-in Bluetooth™ V4.0 10/100/1000 Base T Interface 1 x COMBO audio jack 2 x USB 3.0 port(s) 1 x RJ45 LAN Jack for LAN insert 1 x HDMI Audio Built-in Speakers And Microphone SonicMaster Battery 4Cells 37 Whrs Power Adapter Output : 19 V DC, 3.42 A, 65 W Input : 100 -240 V AC, 50/60 Hz universal Dimensions 38.0 x 25.1 x 2.48 ~3.17 cm (WxDxH) Weight 2.3 kg (with 4 cell battery) Security Kensington lock BIOS Booting User Password Protection Manufacturer Warranty 2-year limited International hardware warranty. *different by country