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Copyright March 2003, Computer Dynamics, Inc.
All Rights Reserved
MPAC-18 Manual
BJ79 jacks. The I/O plate also includes a DB9 female jack for the keyboard and mouse connections.
Two male DB9 jacks are present for serial communications these are COM 2 as an RS232 interface and
COM 3, which is configurable as either RS232 or RS485 by the BIOS settings. An industry standard
DB25 parallel port is also provided.
Communication connectors are provided from the main CPU motherboard. Some of the CPU
motherboard connectors are available on the Bottom Panel.
• Keyboard/mouse port (bottom access)
• Two serial ports, COM2 and COM3 (bottom access).
• Parallel port, LPT-1 (bottom access).
• Two USB ports (bottom access).
• Ethernet 10 Base 2 (bottom access)
Power Input
DP027010 military computers are powered by an internal, auto-ranging AC power supply unit that
accepts 85 to 135 VAC input ranges.
The power supply unit houses an integral ventilation fan that provides cooling for the power supply.
There are no user-serviceable fuses.
Warning
For all equipment that is connected to a power outlet, the socket outlet shall be
installed near the equipment and shall be easily accessible.
Caution
External devices (printer, external disk drive etc.) should not be powered up when
connecting to ports.
USB Ports
Two USB ports are located on the bottom access panel of the unit. The SBC-PIII provides an interface
for two USB 1.0 Ports for Serial Transfers at 1.5 or 12 Mbit/sec. The USB interface supports Legacy
Keyboard and Mouse Software with USB-Based Keyboard and Mouse connections. The USB interface
Complies with UHCI Design Guide, Revision 1.1 interface. The connector is a 5 x 2 straight 0.1” center
header. A Dual rear bracket connector compatible with the USB Host Cable is available from Computer
Dynamics.
Keyboard/Mouse Port
A DB9 connector is located on the bottom access panel. This port is labeled accordingly. This temporary
connection is intended to be used for such things as initial setup, downloading data, uploading software,
etc.