About Your Computer 23
For example, you must connect most devices to a particular I/O port or
connector to operate properly. Also, external devices like a printer
usually require you to load device drivers before they will work.
•When connecting a USB mouse or keyboard, ensure that you connect
to one of the Port 1 USB connectors on the back of the computer.
•Always attach external devices while your computer is turned off. Then
turn on the computer before turning on any external devices, unless
the documentation for the device specifies otherwise.
NOTICE: Before disconnecting a device from the computer, wait 10 to 20
seconds after turning off the computer to avoid possible da mage to the system
board.
Speaker/Headphone Jack
Used to connect computer speakers, headphones, or other audio output
devices. This jack is amplified to support headphones.
IEEE 1394 (FireWire) Connector
Used to attach high-speed serial multimedia devices. For more information,
see "IEEE 1394 (FireWire)."
USB Connectors
Used to attach USB-compliant devices such as printers and speakers to your
computer.
NOTE: When connecting a USB mouse or keyboard, ensure that you connect
to one of the Port 1 USB connectors on the back of the computer.
NOTICE: USB devices do not operate with Microsoft Windows NT.