Touch screen monitor led monitor hd monitor screen size 236 inches max resolution 1 920 x 1 080 pixel lcd technology va response time 6 ms aspect ratio 169 contrast ratio dynamic 12 000 0001 contrast ratio typical 3 0001 brightness 250 cdm widescreen dot pitch 0 272 mm horizontal frequency range 30 80 khz vertical frequency range 55 75 hz number of hdmi inputs 1 number of displayport inputs 1 number of dvi inputs 1 usb 20 ports 3