The ProLite E2083HSD is a 19,5’’ LED-backlit monitor with 1600×900 resolution. It features 5msec response time and >5M: 1 Advanced Contrast Ratio assuring vibrant images and blur free Video. Analogue VGA and Digital DVI inputs ensure compatibility with the latest systems and associated graphics cards. The monitor is Energy Star qualified and VESA mount compatible. ACR 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. LED-BACKLIT 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 VESA mount compliance means you can easily mount your monitor to a wall. SPEAKERS This LED monitor is equipped with two high quality stereo speakers.