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Input/output connectors
Connect optional external devices to the connectors on the front and rear of the
computer.
Your computer has the following input/output (I/O) connectors:
v One audio line in
v Two audio line out
v Two audio microphone
v One Ethernet
v Two IEEE 1394A (FireWire)
v One keyboard
v One mouse
v One parallel
v Two serial
v Six Universal Serial Bus (USB) 2.0
v One video
The following illustration shows the locations of the connectors on the rear of the
computer. See “Controls, LEDs, and connectors” on page 6 for the locations of the
connectors on the front of the computer.
Mouse
Keyboard
USB
1 and 2
Serial 1
Parallel
Serial 2
USB
3 and 4
Line out
(green)
Line in
(blue)
Microphone
(pink)
Video
IEEE 1394A
(FireWire)
Ethernet
Ethernet link
status LED
Ethernet transmit/
receive activity LED
SCSI knockout
Optional serial or video
port knockout
The following sections describe these connectors.
Chapter 4. Installing options 53