A computer monitor that is taller than it is wide. Most portrait monitors are actually landscape monitors that can be swiveled into a portrait orientation. See landscape monitor and portrait.

As a result, I took my second monitor and mounted it in portrait mode, and to be honest, I don't think I could ever go back.

A portrait printed as text. Computer portraits emerged in the 1970s when software was created to turn a photo into text characters. Typically promoted by vendors at carnivals and fairs ...