The environmentally-friendly mercury-free ViewSonic Widescreen Monitor (VA2037m-LED, Black) offers 1600 x 900 resolution, 10,000,000:1 MEGA Dynamic Contrast Ratio, DVI and VGA inputs, 5ms response time and VESA mountable glossy finish design. The aspect ratio adjustment feature of this LED Viewsonoic 20 Monitor automatically senses the input signal and will not stretch a 4:3 signal but instead will position the image in the middle of the screen with sidebars.