Sony VGC -RC110G User Manual page 39

To connect the wireless mouse
1 Insert the supplied two AA batteries into the wireless mouse as shown below.
2 Turn on the computer.
3 Press the CONNECT button on the bottom of the radio frequency receiver.
4 Turn over the wireless mouse, slide the power switch to the ON position, and press the CONNECT button.
Communication between the wireless mouse and the computer should now be established.
!
Step 3 and 4 must be completed within 10 seconds of each other.
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Using Your VAIO Computer