What makes an Xbox One a computer system
An Xbox One is a computer system because it has many inputs and outputs.
Most of the inputs and outputs rest at the back. The only features at the front, are the power button and the disc slot.
There are two HDMI ports (HDMI In, HDMI Out) which display on the screen as an output, and two USB 3.0 ports.
The Extra Features
The new Xbox One with a Blue Ray disc player.
The Xbox company logo
The controller has many input buttons and triggers.