DVI (Digital Visual Interface) ports aren’t nearly as common as they once were, but they can still be found on older displays, GPUs, and A/V equipment. If you have an older device that does have a DVI ...

i had to cancel the order on a 24" acer LCD when i realized that even the best graphics cards only support 1600 x 1200 in digital mode on single link DVI and that 24" has 1920 x 1200 and NO DUAL LINK ...