HP HDX 16 - Manual (Page 14)

External component identification 2–4
Keys
Item Component Function
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 Windows applications key Displays a shortcut menu for items beneath the pointer.
5 Integrated numeric keypad keys Can be used like the keys on an external numeric keypad.
6 Function keys Execute frequently used system functions when pressed in combination with
the fn key.