With the component countdown nearly complete, it's time to extract part number 01: the thermal system.

Out comes the system's single 120 mm fan—looking much like a PC case fan, but with some sculpting that's unique to the Xbox One's design.

The standard Xbox One had a similarly robust cooling setup, possibly designed to avoid a repeat of the Xbox 360's billion dollar problem.

The backup for the One S's biggest fan is an impressive aluminum heat sink and copper heat pipe set. Cool.