Intel Core i7-3612QM, 3.1GHz 6MB Intel® HM76 chipset, 4GB DDR3 1600 MHz, HDD SATA 750GB, DL Super Multi DVD, 15.6" LED 39.6 cm (15.6-inch), TFT, (HD) backlight, glossy, 1366 x 768 pixel Backlight, Integrated Mobile Intel® HD Graphics, Integrated 10/100/1000 MBit/s Realtek RTL 8111F, Intel® Centrino® Wireless N2230 (IEEE 802.11b/g/n), Built-in HD webcam, Bluetooth V4.0 +EDR, 4 in 1 card reader (SD/SDHC/MS/MS Pro), Integrated digital microphone, On board Audio codec Realtek ALC269 VC2 HD Supports high-definition audio, DTS Boost™, Touchpad, Kensington lock slot, Li-Ion battery 6-cell, Interfaces: HDMI, 3x USB 2.0, 1x USB 3.0, RJ45 for LAN, audio in and audio out: spill-resistant keyboard with full num pad, 25.4 mm in height, No Operating System