Apple TV (1st generation) - Manual (Page 35)

Chapter 4 Problem? No problem. 35
Serial Number
The serial number is printed on the bottom of Apple TV. You can also find the serial
number in the Apple TV Settings menu. On Apple TV, choose Settings > About.
Care and Cleaning
Using Connectors and Ports
Never force a connector into a port. Check for obstructions on the port. If the
connector and port don’t join with reasonable ease, they probably don’t match.
Make sure that the connector matches the port and that you have positioned the
connector correctly in relation to the port.
Keeping Apple TV Within Acceptable Temperatures
Operate Apple TV in a place where the temperature is always between 0º and 40º C
(32º to 104º F).
NOTICE: Failure to follow these care and cleaning instructions could result in damage
to Apple TV or other property.