AOC 197SI is a 19-inch TFT LCD monitor with a diagonal hard coating and anti-glare treatment. It has a pixel pitch of 0.294mm x 0.294mm and a viewable image size of 376mm x 301mm. The monitor has a brightness of 300 cd/m2 and a contrast ratio of 700:1. The typical response time is 8 ms. The viewing angle is 150/135 degrees horizontally and 160/160 degrees vertically. The monitor is compatible with VESA, XGA, SVGA, VGA, and is Mac® equipped with a VGA port. The scanning frequency is 29K~83KHz horizontally and 55~75 Hz vertically. The pixel frequency is 135 MHz.