Touch screen monitor itouch plus technology screen size 17 inches max resolution 1 280 x 1 024 pixel response time 30 ms aspect ratio 54 contrast ratio typical 8001 brightness 250 cdm dot pitch 0 264 mm viewing angle 170160 pixel density 9642 ppi horizontal frequency range 31 80 khz vertical frequency range 56 75 hz number of dvi inputs 1 number of vga inputs 1 monitor connection usb x2 integrated feature speakers ergonomic propertie