3
Back Panel Connectors
The motherboard external IO connectors are attached to a metallic I/O shield.
This shield serves several purposes:
•
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It protects the sensitive motherboard from any external EMC problems.
•
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It stops the computer from interfering with other electrical devices.
•
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It allows the motherboard to be easily upgraded in the future without having to
resort to buying a whole new case. Simply change the I/O shield to match the
motherboard.
The I/O shield provides external access to PS/2 keyboard and mouse connectors as
well as two serial ports, one parallel port, the VGA port, RJ45 Local Area Network
(LAN) connection and two USB ports
PRINTER
MOUSE
KEYBOARD
SERIAL 2
SERIAL 1
NETWORK
VGA
USB
Figure 2
NOTE:
The mouse and keyboard can be plugged into either of the PS/2 connectors. Power to the
computer should be turned off before a keyboard or mouse is connected or disconnected.
