Your MX 3000 Scroll Lock function key is located just above the Home Key.

To toggle Scroll Lock off or on:

1. Press the F Mode key to toggle on Enhanced F Key Mode. The F Mode LED on the receiver will be off.
2. Press the Insert key to toggle Scroll Lock off or on.

NOTE: If you have installed the Logitech Mouse and Keyboard software (SetPoint), the confirmation message Scroll Lock Off or Scroll Lock On will also be displayed for about 2 seconds in the lower portion of your monitor each time you toggle the key.