4th Generation Intel® Core™ Processors 4th generation Intel® Core™ processors deliver the performance to increase productivity for your business. Devices turn on in an instant and are always up-to-date. You can multitask quickly, move effortlessly between applications, and collaborate wirelessly in a high quality videoconference — all with the convenience of longer battery life. Plus, you can guard against identity theft and ensure safe access to your network with built-in security features. In fact, the only thing more amazing than an Intel Core processor-based PC is what your users will do with it. Thunderbolt™ Port Thunderbolt is a revolutionary connection technology that simultaneously supports high-resolution displays and high-performance data devices through a single, compact port. Simply connect the W540 to multiple displays and devices with one cable, then sync and backup at up to 10Gbps (twice the speed of USB 3.0), capture and edit multiple uncompressed video streams in real time, and daisy-chain your devices to simplify your workflow. Optional X-Rite® Integrated Color Calibrator X-Rite PANTONE® color calibration yields greater image accuracy, more precise color matching, and a consistently true display. Each individual sensor is uniquely calibrated to each individual display at the factory. ISV Certification Because photographers, light CAD/CAM users, digital content creators, and other industry pros require proven performance and software stability, more than 100 applications are tested and certified by industry-leading independent software vendors. Award-Winning Keyboard Further Enhanced for Windows 8 Full-sized and spill-resistant, the legendary ThinkPad ergonomic keyboard is renowned for its full array of keys, excellent feel, and TrackPoint® pointing device. And now it's optimized for Windows 8 with convenient multimedia buttons, function-lock capability, and immediate access to view apps. Plus, a larger, smooth TrackPad with 5-point click integration can be configured multiple ways through Settings. Plus, the L540 also includes a numeric keypad. NVIDIA® Optimus™ Technology Automatically switch to your discrete graphics card only when it's needed. Get extended battery life without sacrificing high-performance graphics for applications, high-def videos, 3D views, and more. FHD/3K Display With IPS Technology In-Plane Switching (IPS) LCD displays with high brightness. IPS technology allows for vivid colors and nearly 180-degree viewing angles. Intel® vPro Technology Makes enterprise-level manageability even more convenient and cost-saving. Manage, protect, repair, or locate your deployed laptops from anywhere in the world. Stereo Speakers With Dolby® Home Theater® Increased audio clarity and maximized volume output without distortion — enjoy a crisp, clear, immersive surround sound experience over built-in stereo speakers. All the power and nuance of the cinema, all the immediacy of live performance, now from your ThinkPad. Integrated HD Webcam Crystal-clear video, face-tracking and keystroke noise suppression technology will help you web-conference or chat like you're really there. Dual digital-array microphones ensure a premium audio experience. Integrated Fingerprint Reader Get quick, convenient access and secure login with one swipe. WWAN (3G/4G) (Optional) Add wireless WAN connectivity and go online virtually anywhere without a WiFi connection.