Multi-Touch The multi-touch functionality is supported under Windows® 7 only. OverDrive ON / OFF When very fast graphics are displayed your monitor can sometimes get blurry. Turning on the OverDrive feature will eliminate that. 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. 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. HDMI HDMI stands for High-Definition Multimedia Interface. Much smaller and more convenient than DVI, HDMI also has the significant advantage over DVI that it supports audio as well as video signals. FULL HD With true 1920 x 1080p resolution your monitor is ready to display high definition images. This means you can accommodate more information on your screen; e.g. 60% more in comparison to a 1280 x 1024 monitor. 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.