Led monitor series dell professional screen size 19 inches max resolution 1 440 x 900 pixel lcd technology tn response time 5 ms aspect ratio 1610 contrast ratio dynamic 2 000 0001 contrast ratio typical 1 0001 brightness 250 cdm widescreen dot pitch 0 284 mm viewing angle 170160 pixel density 8937 ppi hdcp enabled number of displayport inputs 1 number of dvi inputs 1 number of vga inputs 1 monitor connection usb x2 ergonomic pro