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Chapter 2 Hardware Installation
Chapter 2
Power Connectors
Use a power supply that complies with the A
TX12V P ower Supply Design Guide V ersion 1.1.
An ATX12V power supply unit has a standard 24-pin A TX main power connector that must be
inserted into the 24-pin connector . The 8-pin +12V power connector enables the deliv
ery of
more +12VDC current to the processor ’s Voltage Regulator Module (VRM).
The power connectors from the power supply unit are designed to fit the 24-pin and 8-pin
connectors in only one orientation. Mak e sure to find the proper orientation bef
ore plugging
the connectors.
The system board requires a minimum of 300 W
att power supply to oper ate. Y our system
configuration (CPU power, amount of memory , add-in cards, peripher als, etc.) may exceed the
minimum power requirement. T o ensure that adequate power is pro vided, we strongly recom-
mend that you use a minimum of 400 W att (or greater) power supply .
Important:
Insufficient power supplied to the system ma y result in instabilit y or the add-in boards
and peripherals not functioning properly. Calculating the system’ s approximate power
usage is important to ensure that the power supply meets the system’ s consumption
requirements.
+12V
Power
+12V
Ground
1
4
5
8
COM2
COM1
ATX power
Chassis Intrusion Connector
The board supports the chassis intrusion detection f
unction. Connect the chassis intrusion
sensor cable from the chassis to this connector . When the system’ s power is on and a chassis
intrusion occurred, an alarm will sound. When the system’ s power is of f and a chassis intrusion
occurred, the alarm will sound only when the system restarts.
1
2
Ground
Signal
Chassis
Intrusion
COM2
COM1
13
12 24
1
+3.3V
+3.3V
GND
+5V
GND
+5V
GND
PWR_OK
+5VSB
+12V
+12V
+3.3V
+3.3V
-12V
GND
PS_ON#
GND
GND
GND
-5V
+5V
+5V
+5V
GND