Apple Mac mini (Intel-based; Mid 2007) - Manual (Page 50)

50 Chapter 4 Last, but Not Least
Using the Power Adapter
Follow these guidelines for using the power adapter:
 Make sure you push the power plugs snugly into the power adapter, your computer,
and the power outlet.
 Always leave space around the power adapter and use your computer in a location
where airflow around the power adapter is not obstructed.
 Use the power adapter that came with your computer. Your Mac mini uses a 110 watt
power adapter.
 The only way to disconnect power completely is to unplug the power cord. Make
sure you pull the plug, not the cord.
WARNING: It is normal for the power adapter to get warm during use. Always allow
adequate ventilation and avoid prolonged contact.