Sony VGC-RT2SRY User Manual page 24

Connecting a Power Source and Cables
You need a power cord to connect your computer to an AC power source and it must be plugged into the power source before
you can establish communication with your wireless keyboard and mouse. In addition, you might want to connect other cables
if you use some functions of your computer, such as the network (LAN) function.
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Use only the supplied power cord for your computer.
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Getting Started