Apple MacBook Pro (15-inch, Early 2011) User Manual
Page 71
71
Chapter 5
Last, but Not Least
Disconnect the power adapter and disconnect any other cables if any of the following
conditions exists:
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You want to add memory or upgrade the hard disk drive.
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You want to clean the case (use only the recommended procedure described on
page 74).
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The power cord or plug becomes frayed or otherwise damaged.
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Your MacBook Pro or power adapter is exposed to rain, excessive moisture, or liquid
spilled into the case.
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Your MacBook Pro or power adapter has been dropped, the case has been damaged,
or you suspect that service or repair is required.
The MagSafe power port contains a magnet that can erase data on a credit card, iPod,
or other device. To preserve your data, don’t place these or other magnetically sensitive
material or devices within 1 inch (25 mm) of this port.
If debris gets into the MagSafe power port, remove it gently with a dry cotton swab.
MagSafe power specifications:
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Frequency: 50 to 60 Hz, single phase
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Line Voltage: 100 to 240 V
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Output Voltage: 18.5 V DC, 4.6 A