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PCA-6275 User's Manual
4.1 Introduction
On-board security (OBS) functions monitor key hardware. They help
you maintain your system's stability and durability.
The PCA-6275 can monitor 5 sets of system positive voltages, 2 sets
of system negative voltages, CPU cooling fan speed, and CPU
temperature.
The positive system voltage sets which can be monitored include:
• CPU core voltage: 1.7 V ~ 3.3 V, according to Intel specifications
• Transmission voltage from CPU to chipset: typically 1.5 V
• Chipset voltage: typically 3.3 V
• Main voltage: +5 V, +12 V
The negative system voltage sets which can be monitored include:
• Main voltage: -5 V, -12 V
4.2 Installation of OBS Devices
After you have mounted the CPU and cooling modules, enable the
OBS functions as follows:
1. Take the specially designed temperature sensor cables out of the
accessories bag.
2. Connect the 2-pin header of each cable to connector RT1 and RT2
respectively.
3. Attach the sticker to the heat sink, but NOT on the plastic portion
of the heat sink.
4. Place the sensor on the nearest part of the CPU, to ensure that true
CPU temperature is measured.