Texas Instruments 4000M - Manual (Page 196)

Ex ternal Numeric Keypa d
The optional Numeric Keypad (TI Part No. 2581381-0002)
enables you to type numeric data while still permitting data
entry on the keyboard. You also have the convenience of
direct access to some functions (such as the PGUP, PGDN,
and HOME keys) without the need to also press the Fn key.
Installing the Numeric Keypad disables the embedded
numeric keypad.
To attach the numeric keypad:
1. Turn off the computer.
2. Attach the keyboard connector to the PS/2 port on the
back of your computer.
3. Ensure that the keyboard/numeric keypad/mouse
switch is in the UP position.
4. Turn the computer on.
For usage instructions, refer to the Numeric Keypad
documentation.
Extended Numeric Keypad
External Numeric Keypad
11-10 TravelMate Options