The icon consists of two simple shapes to look like a stop button. The first is a is a complete circle. Centered in the middle of this circle is a capitalized letter X.
This Xbox X 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 6,000 icons, all in the same style and quality.