HP (Hewlett-Packard) dm4-1160us ユーザーズマニュアル

You can connect an external USB mouse to the computer using one of the USB ports on the
computer. A USB mouse can also be connected to the system using the ports on an optional docking
device or expansion product.

Action keys are customized actions that are assigned to specific keys at the top of the keyboard.

To use an action key, press and hold this key to activate the assigned action.

Depending on the application you are using, pressing 

fn

 and one of the action keys will open

a specific shortcut menu within that application.

The action key feature is enabled at the factory. You can disable this feature in Setup Utility

(BIOS) and revert back to pressing the 

fn

 key and one of the function keys to activate the assigned

function.

Help and Support

Opens Help and Support, which provides information about your Windows operating
system and computer, answers to questions and tutorials, and updates to your
computer.

Help and Support also provides automated troubleshooting and links to support
specialists.

Screen brightness down

Decreases the screen brightness level incrementally when you hold down this key.

Using the action keys

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