Asus P4P800-MX - Manual (Page 62)

2-24 Chapter 2: BIOS information
CPU Fan Speed [xxxxRPM] or [N/A]
Chassis Fan Speed [xxxxRPM] or [N/A]
The onboard hardware monitor automatically detects and displays the CPU,
chassis, and power fan speeds in rotations per minute (RPM). If any of the fans is
not connected to the motherboard, the specific field shows N/A.
VCORE Voltage, +3.3V Voltage, +5V Voltage, +12V Voltage
The onboard hardware monitor automatically detects the voltage output through
the onboard voltage regulators.
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”.