This Switch Host icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,600 icons, all in the same style and quality.
It's an icon of a computer screen that has been reduced to a small version of a computer monitor. It is a rectangle with hard corners sitting on a flat rectangle with a little rectangle in the center. Inside the bigger rectangle appears to be a three dimensional box.