Asus P5B - Manual (Page 92)

4-28 Chapter 2: BIOS setup
Chassis Fan1/Fan2 Speed [xxxxRPM] or [N/A] or [Ignored]
The onboard hardware monitor automatically detects and displays the chassis fan speed
in rotations per minute (RPM). If the fan is not connected to the chassis, the specific field
shows N/A. Select Ignored if you do not wish to display the detected speed.
Chassis Q-Fan Control [Disabled]
Allows you to enable or disable the chassis Q‑Fan control. Configuration options:
[Disabled] [Enabled]
Power Fan Speed (RPM) [xxxxRPM] or [N/A] or [Ignored]
The onboard hardware monitor automatically detects and displays the power fan speed
in rotations per minute (RPM). If the fan is not connected to the chassis, the specific field
shows N/A. Select Ignored if you do not wish to display the detected speed.
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage
The onboard hardware monitor automatically detects the voltage output through
the onboard voltage regulators.
4.6 Boot menu
The Boot menu items allow you to change the system boot options. Select an item
then press to display the sub-menu.
Boot settings
Boot Device Priority
Boot Settings Configuration
Security
4.6.1 Boot Device Priority
Boot Device Priority
1st Boot Device [1st FLOPPY DRIVE]
2nd Boot Device [PM-ST330620A]
3rd Boot Device [PS-ASUS CD-S360]