User's Guide
54
Chapter 4 Last, but Not Least
MagSafepowerspecications: (>>> REVIEWERS: Please update for 45W)
 Frequency: 50 to 60 Hz, single phase
 Line Voltage:100to240V
 Output Voltage: 16.5 V DC, 3.65 A
Hearing damage Permanent hearing loss may occur if earbuds or headphones are
used at high volume. You can adapt over time to a higher volume of sound that may
sound normal but can be damaging to your hearing. If you experience ringing in your
earsormuedspeech,stoplisteningandhaveyourhearingchecked.Thelouderthe
volume,thelesstimeisrequiredbeforeyourhearingcouldbeaected.Hearingexperts
suggest that to protect your hearing:
 Limit the amount of time you use earbuds or headphones at high volume.
 Avoid turning up the volume to block out noisy surroundings.
 Turn the volume down if you can’t hear people speaking near you.
High-risk activities This computer is not intended for use in the operation of nuclear
facilities,aircraftnavigationorcommunicationssystems,airtraccontrolsystems,or
for any other uses where a failure of the computer system could lead to death, personal
injury, or severe environmental damage.