Canon PowerShot A550 User Manual page 136

Using the AC Adapter Kit ACK800
It is best to power the camera with AC Adapter Kit ACK800 (sold
separately) when you are using it for long periods of time or
connecting it to a COrnputer.
98
Connect the power cord to
the compact power
adapter first and then plug
the other end into the
power outlet.
Open the terminal cover
and attach the cord to the
DC IN terminal.
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Compact Power
Adapter CA-PS800