DFI DT122-CR Manual - Manual (Page 30)

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30
Chapter 5 Ports and Connectors
Chapter 5
Chassis Intrusion Connector
The board supports the chassis intrusion detection function. 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 off and a chassis intrusion
occurred, the alarm will sound only when the system restarts.
MyGuard Hardware Monitor
Install the “MyGuard Hardware Monitor” utility. By default, the chassis intrusion detection func-
tion is disabled. When enabled, a warning message will appear when the chassis is open. The
utility can also be configured so that a beeping alarm will sound when the chassis is open. Re-
fer to the “MyGuard Hardware Monitor” section in chapter 4 for more information.
1 2
Ground
Signal
Power Connectors
13
1 12
24
+3.3VDC +3.3VDC COM +5VDC COM +5VDC COM PWR_OK +5VSB +12VDC +12VDC +3.3VDC
+3.3VDC
-12VDC
COM
PS_ON#
COM COM COM
NC
+5VDC +5VDC +5VDC
COM
Use a power supply that complies with the ATX12V Power Supply Design Guide Version 1.1.
An ATX12V power supply unit has a standard 20-pin ATX main power connector that must be
inserted into the 20-pin connector. The 4-pin +12V power connector enables the delivery 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 20-pin and 4-pin
connectors in only one orientation. Make sure to find the proper orientation before plugging
the connectors.
The system board requires a minimum of 300 Watt power supply to operate. Your system
configuration (CPU power, amount of memory, add-in cards, peripherals, etc.) may exceed the
minimum power requirement. To ensure that adequate power is provided, we strongly recom-
mend that you use a minimum of 400 Watt (or greater) power supply.
Important:
Insufficient power supplied to the system may result in instability 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.