The ProLite B2083HSD is a 19,5'' 1600x900 LED-backlit monitor with a Height Adjustable Stand supporting Screen Rotation, ensuring perfect posture and optimal viewing comfort. It features 5msec black-to-black response time and 5 000 000 : 1 Advanced Contrast Ratio assuring very good picture quality. The monitor is TCO6 and Energy Star Certified. A perfect solution for education, local government, business and finance markets. Contrast Ratio is a measurement of the difference between the darkest black and the brightest white your monitor can display. Advanced Contrast Ratio is a feature that automatically adjusts contrast and brightness of the screen to assure perfect picture quality while watching films and playing games. A typical CCFL LCD uses four backlight lamps. Using LED diodes considerably lowers the power consumption and reduces the CO2 emission into the environment making this LCD a true ECO-Friendly product. VESA mount compliance means you can easily mount your monitor to a wall. This LED monitor is equipped with two high quality stereo speakers. HAS A Height Adjustable Stand allows you to set the perfect position of the screen ensuring ergonomic posture and optimal viewing comfort which benefits not only your health but also productivity. Pivot Screen rotation means you can change the position of the screen from landscape into portrait. This feature can be very handy while working with long spreadsheets or texts.