Logitech M505 User Manual page 8

8. Set the on/off switch to the "ON" position. This will turn on the mouse and allow you to test
whether the mouse is being powered.
9. Turn the mouse over until the on/off light is visible. Confirm that the on/off light is on.
TIP:
The on/off light automatically turns off after ten seconds, although the
mouse is still being powered. If the on/off light is off and you are not
sure whether the mouse is being powered, start again from step 7.
If the on/off light is on, you have successfully powered the mouse.
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