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Connecting I/O Devices
The backplane of the mainboard has the following I/O ports:
PS/2 Mouse
PS/2 Ke yboard
LPT1
COM1
VGA Port
Audio Ports
LAN Port
USB Ports
External Connector Color Coding
Many connectors now use standard colors as shown in the table below.
Connector
Audio line-in
Audio line-out
Digital monitor/flat panel
Microphone
Parallel
PS/2-compatible keyboard
PS/2-compatible mouse
Serial
USB
SCSI, network, telephone, modem
This concludes Chapter 2. The next chapter covers the BIOS.
Use the upper PS/2 port to connect a PS/2 pointing
device.
Use the lower PS/2 port to connect a PS/2 keyboard.
Use LPT1 to connect printers or other parallel communi-
cations devices.
Use the COM ports to connect serial devices such as
mice or fax/modems. COM1 is identified by the system
as COM1/3. COM2 is identified by the system as
COM2/4.
Connect your monitor to the VGA port.
Use the three audio ports to connect audio devices. The
first jack is for stereo line-in signal. The second jack is
for stereo line-out signal. The third jack is for micro-
phone.
Connect an RJ-45 jack to the LAN port to connect your
computer to the Network.
Use the USB ports to connect USB devices.
Teal or Turquoise
22
Color
Light blue
Lime
Blue
Pink
Burgundy
Purple
Green
Black
None
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