Identifying the hardware features

Rear view of the computer
ThinkPad
.1/ The PC Card slot accepts a PC Card.
.2/ The PC Card eject button ejects the PC Card from the PC Card
slot.
.3/ The headphone jack, a inch (3.5mm) diameter jack, is where
you connect stereo headphones or external speakers.
.4/ The line-in jack, a inch (3.5mm) diameter jack, is where you
connect an external audio device.
.5/ The microphone jack, a inch (3.5mm) diameter jack, is
where you connect a self-powered stereo microphone.
Note: Do not plug any device into the microphone jack except a
microphone.
.6/ The external diskette drive connector allows you to connect
the external diskette drive to the ThinkPad 240.
.7/ The security keyhole is used with a mechanical lock.
.8/ The internal modem port is used for connecting your com-
puter to an analog telephone line. (Availability depends on model
and country configuration.)
4ThinkPad 240 User's Reference