Touch screen monitor led monitor hd monitor usb hub 1x upstream 4x downstream usb 30 10 touchpoints windows 8 compatible series iiyama prolite screen size 215 inches max resolution 1 920 x 1 080 pixel lcd technology a mva response time 12 ms aspect ratio 169 contrast ratio typical 3 0001 brightness 225 cdm widescreen dot pitch 0 248 mm viewing angle 178178 pixel density 10246 ppi hdcp enabled horizontal frequency range 30 80 khz