1991L, 19-INCH LCD WVA (LED BACKLIGHT), OPEN FRAME, VGA & DISPLAY PORT VIDEO INTERFACE, ACCUTOUCH, USB & RS232 TOUCH CONTROLLER INTERFACE, WORLDWIDE-VERSION, ANTI-GLARE, NO POWER BRICK
2740L, 27-INCH WIDE LCD (LED BACKLIGHT), OPEN FRAME, VGA & DVI VIDEO INTERFACE, INTELLITOUCHZERO-BEZ, SINGLE TOUCH, USB & SERIAL TOUCH, CLEAR, NO POWER BRICK