Sony VGC-RC300 - Manual (Page 20)

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Getting Started
Connecting the Radio Frequency Receiver for the Wireless Keyboard and Mouse
Along with a wireless keyboard and mouse, a radio frequency receiver is also supplied with your computer to enable the
computer to communicate with the wireless keyboard and mouse. Make sure to connect the radio frequency receiver before
using the wireless keyboard and mouse.
For establishing communication with the wireless keyboard and mouse, see Using the Wireless Keyboard (page 30) and
Using the Mouse (page 34) .