CPU: Intel Dual Core U5400 Processor (1.2GHZ, GIGABYTE Smart Turbo up to 1.6GHz) OS: Genuine Windows 7 Home Premium Genuine Windows 7 Professional Display: 11.6'' Capacitive Multi-touch Panel 1366x768 LED backlight System Memory: 2GB/4GB DDRIII, 2 slots (Max 8GB) Chipset: Mobile Intel HM55 Express Chipset Video Graphics: Intel HD Graphics with dynamic frequency Hard Disk Drive: 320/500GB 2.5"9.5mm SATA HDD 5400rpm Optical Disk Drive: Docking Station includes slot-in DVD- Super Multi Dual-Layer Drive I/O Port: USB(2.0)*2, eSATA/USB Combo*1, HDMI, D-sub, RJ45, Mic-in, Earphone-out, 4-in-1 Card Reader (SD/MMC/MS/MS Pro), DC-in Jack, Docking Port Audio: 2 Watt Speaker*4 (Including 2 Woofer speaker), Internal Microphone Communications: LAN: 10/100/1000Mbps Ethernet Base-T Wireless LAN: 802.11 b/g/n Wireless Bluetooth: Bluetooth V2.1 + EDR Webcam: 1.3 MegaPixel Security: Kensington Lock Battery: Li-ion 4-cell Dimension: 290(W) x 220.7(D) x 27.86~40(H) mm Weight: ~1.63Kg (w/ 4-cell battery) Docking Station I/O Port(Optional): ODD, USB(3.0)*2, USB(2.0)*2, HDMI, D-sub Please do not forget to check with our site as often as possible in order to stay updated on the latest drivers, software and games. Note: Try to set a system restore point before installing a device driver. It will help you restore system if installed driver not complete.