Tech Specs Processor Intel Core i7-5600U Processor (4M Cache, 2.6GHz), 5th Gen, Turbo Boost 2.0 (3.2GHz), Intel vPro Technology Operating system Windows 10 Pro 64-bit - Lenovo recommends Windows 10 Pro. Display 15.6" HD (1366x768), anti-glare, 200 nits, 350:1 contrast ratio Graphics Intel HD Graphics 5500 Memory 8GB (4+4) Webcam Integrated 720p HD Camera Storage 256 GB SSD SATA3 Dimensions (W x D x H) Non-touch: 380.6 x 258.2 x 22.45 mm Multi-touch: 380.6 x 258.2 x 23.30 mm Case colour Graphite Black Battery 9-cell Li-Ion (44Wh) internal battery with hot-swappable 3-cell (23Wh) rear battery 8 to 9 hours depending on the work AC adaptor Input 100/240 Output 3.25 A Keyboard Standard Keyboard UltraNav TrackPoint pointing device and buttonless Mylar surface touchpad, multi-touch Audio support HD Audio, Realtek ALC3232 codec/stereo speakers, dual array microphone, combo audio/mic jack Ethernet vPro: Intel Ethernet Connection I218-LM (Clarksville) Wireless LAN Intel Dual Band Wireless-AC 7265 (2x2, 802.11ac/a/b/g/n) with Bluetooth 4.0 Ports 3 x USB 3.0 (one AlwaysOn) Combo audio/microphone jack Ethernet (RJ45) 4-in-1 card reader (MMC, SD, SDHC, SDXC) Smart Card Reader (optional) Dock connector VGA Mini DisplayPort