Less than four inches square and an inch tall (the exact size of the 2nd generation Apple TV) the small but mighty Apple TV 3rd Generation adds the ability to play 1080p HD content.

The backside of the Apple TV 3rd Generation features the same exact ports as the previous iteration:

AC adapter port

HDMI output port

Micro-USB (for service and support)

Optical audio out port

10/100 Base ethernet port