Lenovo ThinkPad T490s Hardware Maintenance Manual page 51

Fn+K
Fn+P
Fn+S
Fn+4
Fn+Left arrow key
Fn+Right arrow key
Equal the ScrLK or Scroll Lock key on a conventional external keyboard.
Equal the Pause key on a conventional external keyboard.
Equal the SysRq key on a conventional external keyboard.
Put the computer to sleep mode. To wake up the computer, press Fn or the power
button.
Equal the Home key.
Equal the End key.
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Chapter 5 Special keys