IBM L40 SX, Quick Reference

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4. Brightness Control adjusts the brightness of the display.
5. Power Switch turns the computer on (1) and off (O).
6. Diskette-Eject Button releases a diskette from the drive. 1.44
is printed on the button to indicate that it is a 1.44MB diskette
drive (see page 83 for more information).
7. Diskette Drive reads data from or writes data to a diskette. For
information about using the correct diskettes, see page 83.
Note: Because the diskette drive can be affected by a magnetic
field. you should not use the system unit near electric
appliances such as a TV set or a speaker. If you use a PS/2 or
other display near the system unit, set it more than 13 cm (5
inches) away from the diskette drive.
8. System Status Display shows the computer status by using
small symbols called icons (see page 28 for the meaning of
each symbol).
9. Numeric Keypad is an auxiliary input device consisting of 17
data keys and is connected to the pointing-device connector at
the rear of the computer. The numeric keypad has a connector
to accept a mouse.
10. IBM Mouse is an optional pointing device and can be
connected either to the numeric keypad or to the pointing-device
connector at the rear of the computer.
11. Keyboard is used to enter information into the computer.
12. Economy Switch determines the processing speed of the
computer to economize on power usage. There are two modes.
If A (automatic) mode is selected, the computer varies its
processing speed depending on how much activity occurs. This
mode conserves battery power. If the
M (manual) mode is
selected, you can run the computer at a fixed processing speed
specified on the
Set Features Main Menu (see page 56), which
will not optimize battery life.
Introducing the IBM Personal System/2 Model L40 SX 25