ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR RoHS stands for Restriction of Hazardous Substances. RoHS, also known as Directive 2002/95/EC, originated in the European Union and restricts the use of specific hazardous materials found in electrical and electronic products (known as EEE). All applicable products in the EU market after July 1, 2006 must pass RoHS compliance. The substances banned under RoHS are lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (CrVI), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), and four different phthalates (DEHP, BBP, BBP, DIBP). RoHS <b>Higher Performance When You Need It Most</b> Intel® Turbo Boost Technology 2.01 accelerates processor and graphics performance by increasing the operating frequency when operating below specification limits. The maximum frequency varies depending on workload, hardware, software, and overall system configuration. 2.0 Legacy Intel® Core™ Processor Intel Core i5-2xxx Lenovo ThinkPad L420, Intel® Core™ i5, 2.5 GHz, 14", 1366 x 768 pixels, 320 GB, Windows 7 Professional Lenovo ThinkPad L420. Product type: Laptop, Form factor: Clamshell. Processor family: Intel® Core™ i5, Processor model: i5-2520M, Processor frequency: 2.5 GHz. Display diagonal: 14", Display resolution: 1366 x 768 pixels. Internal memory type: DDR3-SDRAM. Total storage capacity: 320 GB, Storage media: HDD, Optical drive type: DVD Super Multi. On-board graphics card model: Intel® HD Graphics 3000. Operating system installed: Windows 7 Professional. Product color: Black. Weight: 5.47 lbs (2.48 kg) https://www.notebookcheck.net/Review-Lenovo-ThinkPad-L420-NYV4UGE-Notebook.60605.0.html As expected, exacting requirements are placed on a Lenovo ThinkPad since ThinkPads enjoy a very good reputation in the business sector. We'll cross-examine the budget ThinkPad L420 thoroughly and see how it fares.... Known ThinkPad case quality, Very good keyboard, Spill-proof, Trackpoint in addition to the touchpad, UMTS built-in/ready, Quiet operation, Matt display, Docking port Contrast poor display, Moderate power reserves, No USB 3.0 Lenovo ThinkPad L420We can very well imagine using the ThinkPad L420 as a tool for daily use after our tests. Especially the good keyboard and the touchpad/Trackpoint combination will appeal to you if you do a lot of writing on a notebook. Even if the lap... http://www.notebookreview.com/notebookreview/lenovo-thinkpad-l420-review/ The L420 has a single fan that exhausts out the left side of the chassis. It is always on and audible, however has no annoying pitch; it mostly sounds like a rush of air. Even under full load, the fan hardly gets louder... Very good build quality, Excellent keyboard and touchpad, Good selection of ports, Average battery life, Low screen resolution, Only 1year warranty standard, The Lenovo ThinkPad L420 is an above-average offering in the value business notebook segment. It succeeds in barely enough areas to get our recommendation, however. Highlights first: very good build quality, an excellent keyboard and touchpad, a good selection of input/output ports, and good overall performance. Now for the downsides; the first is battery life. Four and a half hours is average at https://www.computerworld.com/article/2507911/two-laptops-mean-business--hp-elitebook-8460p-vs--lenovo-thinkpad-l420.html The ThinkPad has a wider assortment of controls arrayed around the keyboard, including the microphone, buttons for audio volume and muting, and Lenovo's ThinkVantage emergency... https://www.laptopmag.com/reviews/laptops/lenovo-thinkpad-l420 With a comfortable keyboard, a second-generation Intel Core processor, and a $898 price tag, the Lenovo ThinkPad L420 is proof that "business notebook" and "value" don't have to be mutually exclusive. This 14.1-inch notebook continues Lenovo's tried-an... Great keyboard, Affordable price, Good battery life, Quick boot time Weak audio, Multitouch gestures don't work well, Design a bit bland The $898 ThinkPad L420 falls somewhere between the high-powered T series and the more small-business focused Edge lineup. As such, it borrows the security features and docking capability of the former line, but the more affordable pricing of the latter...