IBM L40 SX Quick Reference page 22

2.1 Basic Features
Rechargeable Battery
This is installed at the rear of the computer and supplies power
necessary to operate the computer.
Numeric Keypad
This is an external keypad consisting of 17 data keys labeled with 0
# through 9 and special characters.
# connector for a mouse or the Trackpoint.
AC Adapter
# This portable power device allows you to operate the Model L40 SX with
# ac power.
PS/2 Model L40 SX Quick Reference
Basic Features
The numeric keypad also has a
¦ Copyright IBM Corp. 1991
2.1 - 1