Apple TV (3rd generation) - Manual (Page 13)

Chapter 1 Connect. 13 Chapter 1 Connect.
Step 2: Connect the power cord
Connect one end of the power cord to the power port on the back of Apple TV
and the other end to a power outlet.
Power port
Important: Don’t place anything on top of Apple TV. Objects placed on top may
interfere with the wireless signal. Don’t place Apple TV on top of other electronic
equipment in a media cabinet.
Step 3: Turn on your TV and select the input
The first time you use Apple TV, it helps you choose a language and select a
network. See Chapter 2, “Configure.” on page 15.
If you see just a black screen the first time you use Apple TV, make sure the input
setting you’ve selected on your TV matches the input you connected the cables
to on your TV or home theater receiver. See Chapter 4, “Problem? No Problem.” on
page 25, and refer to the documentation that came with your TV for information
about its inputs.