Lenovo ThinkPad W550s Mobile Workstation Laptop - Windows 8.1 Pro, Intel Core i7-5500U, 8GB RAM, 250GB SSD, 15.6" FHD (1920x1080) Display, NVIDIA Quadro K620M, Backlit Keyboard, AC-WiFi 4th Generation Intel Core i7-5500U (4M Cache, up to 3.0GHz) - 250GB Solid State Drive (SSD) - 8GB PC3-12800 DDR3L SDRAM, 1600MHz SODIMM 15.6" Full HD (1920x1080) Anti-Glare (Matte) Display - NVIDIA Quadro K620M Discrete Graphics with 2GB VRAM - Stereo Speakers with Dolby Home Theater Built in HD 720p Webcam with Dual noise-cancelling Microphones - Intel Dual Band Wireless 7265AC with Bluetooth 4.12 Connectivity: Integrated 4-in-1 SD card reader (SD, SD-HC, SDXC, MMC), 3 USB 3.0 ports (1 Always-on charging), VGA, miniDisplay Port, Mic / Headphone Combo Jack Windows 8.1 Pro 64-Bit [Eligible for free Windows 10 Upgrade] - ThinkPad Precision Backlit Keyboard with NumberPad / 6-Cell Li-Ion Removable Rear Battery (47Whr, External), 65W AC Adapter (Internal Battery is Optional / not included).