Diamond Systems Athena III User Manual - Page 13

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7.

EXPANSION I/O SECTION

These connectors are on the bottom side of the panel I/O board, outside the PC/104 outline. They do not connect
to the Athena III SBC. They are used for other internal connections and functions. These connectors are 0.1" pitch
male pin headers.

7.1 Serial Port Expansion

The serial port expansion connector is a 2x10 pin 0.1" pitch male pin header. Their signals are brought out to two
DB9 male connectors for serial ports 5 and 6 on the top side of the panel board.

7.2 VGA Expansion

The VGA expansion connector is a 2x10 pin 0.1" pitch male pin header that is used to connect VGA signals from
an alternate source to the VGA connector.

7.3 Digital I/O Expansion

The data I/O connector is a 50-Pin Centronics female connector that connects the digital I/O signals from an
expansion digital I/O board to the outside world.

7.4 AUX Power Connector

The AUX Power connector allows power connection to peripherals mounted inside the Pandora enclosure like
HDDs (hard disk drives), recording devices or other devices that cannot get power from the PC/104 stack.
+12V/VAR
1
GND
2
GND
3
+5V
4
Athena III Panel I/O Board User Manual Rev A
www.diamondsystems.com
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13