Parallel connector
Serial connector
Infrared port
External monitor
connector
AC power connector
Docking connector
Cooling fan
Keyboard/mouse
connector
Connects an optional parallel device
such as a printer.
Connects an optional external serial
device such as a mouse or printer.
Allows wireless communications
between the computer and another
infrared-equipped device using an
infrared light beam. Available on
specific models.
Connects an optional external
display, such as an external CRT
monitor.
Connects to external (AC) power.
A 176-pin expansion bus connector
that connects the computer to the
optional convenience base.
Regulates the temperature of the
computer and its internal
components.
Connects an optional full-sized
keyboard and/or PS/2 compatible
mouse. This Y connector allows
simultaneous connection of mouse
and keyboard.