Asus P4B-MX - Manual (Page 82)

4-28 Chapter 4: BIOS Setup
4.5.2 Hardware Monitor
MB Temperature [xxxC/xxxF]
CPU Temperature [xxxC/xxxF]
The onboard hardware monitor automatically detects the MB
(motherboard) and CPU temperatures.
CPU Fan Speed [xxxxRPM] or N/A
System Fan Speed [xxxxRPM] or N/A
PCI Fan Speed [xxxxRPM] or N/A
The onboard hardware monitor automatically detects the CPU, system,
and PCI fan speeds in rotations per minute (RPM). If any of the fans is not
connected to the fan connectors on the motherboard, the specific field will
show N/A.
VCORE Voltage, +3.3V Voltage, +5V Voltage, +12V Voltage,
+3VSB Voltage, +5VSB Voltage
The onboard hardware monitor automatically detects the voltage output
through the onboard voltage regulators and show the values on these
fields.
If any of the monitored items is out of range, the following error
message appears: “Hardware Monitor found an error. Enter Power
setup menu for details”. You will then be prompted to “Press F1 to
continue or DEL to enter SETUP”.