2–4 Maintenance and Service Guide
External component identification
Keys
Item Component Description
(1) esc key Displays system information when pressed in combination with the fn key.
(2) fn key Executes frequently used system functions when pressed in combination with 
a function key or the esc key.
(3) Windows logo key Displays the Windows Start menu.
(4) Function keys Execute frequently used system functions when pressed in combination with 
the fn key.
(5) Windows applications key Displays a shortcut menu for items beneath the pointer.
(6) Integrated numeric keypad and 
volume hotkeys
■ Can be used like the keys on an external numeric keypad.
■ Adjusts system volume when the asterisk (*), minus sign (-), or plus 
sign
 (+) is pressed in combination with the fn key.
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