Micron Technology MERIDIAN 850 - Manual (Page 27)

27
Using the Embedded Numeric Keypad
A numeric keypad for entering numbers is embedded within the main
keyboard. To use the numeric characters, press the Num Lock button.
Keys with a number in the lower right corner will type numbers whenever
Num Lock is enabled. To return the keys to normal letters, press Num
Lock again.
If you install an external keyboard or keypad, the keypad function is
disabled.
Embedded Numeric
Keypad (gray keys)
Chapter 2 - The Big Picture