About Your Computer 21
NOTICE: When you disconnect external devices from the back of the
computer, wait 5 seconds after turning off the computer before you reconnect
any devices to avoid possible damage to the system board.
Serial Port Connectors
Default port designations: COM1 for serial port 1 and COM2 for serial port
2. You can reassign the serial port's de signation in system setup if you add an
expansion card containing a serial port using this designation.
If you set the system’s serial ports to Aut o in system setup and add an
expansion card containing a serial port configured to a specific designation,
the computer automatically maps (assigns) the integrated ports to the
appropriate COM setting as necessary.
Before you add a card with a serial port, check the d ocumentation that
accompanied your software to ensure that the software can be mapped to
the new COM port designation.
Parallel Port Connector
Used to connect printers. Default designation: LPT1.
NOTE: The integrated parallel port is automatically disabled if the system
detects an installed expansion card containing a parallel port configured to the
same address as specified in the Parallel Port option in system setup.
Microphone Jack
Used to attach a standard personal computer microphone. Connect the
audio cable from the microphone to the microphone jack.
Line-Out/Speaker Jack
Used to attach computer speakers. This jack is amplified, so speakers with
integrated amplifiers are not required. Connect the audio cable from the
speakers to this jack.
Line-In Jack
Used to attach record/playback devices such as cassette players, CD players,
and VCRs. Connect the line-out cable from any of these devices to the line-
in jack.