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Mic
There is one microphone connector on the front of the computer. Connect a
microphone to this connector to record sounds onto the hard disk or to use
speech-recognition software.
Auxiliary-device (pointing-device) connector
There is one auxiliary-device connector on the rear of the computer. Use this
connector to connect a mouse or other pointing device. The following illustration
shows an auxiliary-device connector.
6
4
Ethernet (RJ-45) connector
There is one Ethernet connector on the rear of the computer. Use this connector to
connect the computer to a 10 Mbps, 100 Mbps, or 1000 Mbps network. The
following illustration shows an Ethernet connector.
Activity LED
Connect a Category 3, 4, or 5 unshielded twisted-pair (UTP) cable to this connector.
The 100BASE-TX and 1000BASE-T Fast Ethernet standards require Category 5 or
higher cabling.
The Ethernet connector has one LED that indicates Ethernet-link status. When this
LED is lit, it indicates that there is an active connection on the Ethernet port. Activity
between the computer and the network is indicated by the Ethernet transmit/receive
activity LEDs on the front and rear of the computer (see "Controls, LEDs, and
connectors" on page 9).
IEEE 1394 (FireWire) connector (some models)
There is one 4-pin Institute of Electrical and Electronics Engineers (IEEE) 1394
(FireWire) connector on the front of the computer and one 6-pin IEEE 1394
(FireWire) connector on the rear of the computer. Use these connectors to connect
IEEE 1394 (FireWire) devices. The following illustrations show the IEEE 1394
(FireWire) connectors.
4-pin IEEE 1394 (FireWire) connector (front)
5
3
1
2
(green)
8
1
4
3
2 1
Link LED
(green)
Chapter 4. Installing optional devices
59
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