Asus CROSSHAIR IV FORMULA User Guide - Page 109

OPT TEMP 1/2/3 Overheat Protection [90ºC] Allows you to set the temperature over which the system automatically shuts down when any of the thermal sensor cables connected to the motherboard detects device overheat to protect the device from damage. Configuration options: [Disabled] [70ºC] [80ºC] [90ºC] [100ºC] Fan Speed Monitor CPU Fan; Power Fan; Chassis Fan 1/2/3; OPT Fan 1/2/3 Speed [xxxxRPM] or [Ignored] / [N/A] The onboard hardware monitor automatically detects and displays the CPU fan, chassis fan, power fan, and optional fan speed in rotations per minute (RPM). If any of the fans is not connected to the motherboard, the field shows [N/A]. These items are not user‑configurable. Fan Speed Control Crosshair IV Formula BIOS Setup Power Fan Speed Control CPU Q-Fan Function Chassis Q-Fan Function [Disabled] [Disabled] Disable/Enable Q-Fan functions of CPU fan Power Fan Control [Disabled] OPT Fan 1 Control D�i�sa�bl�ed�] OPT Fan 2 Control [Disabled] OPT Fan 3 Control [Disabled] CPU Q-Fan Function [Disabled] Allows you to enable or disable the CPU fan controller. [Disabled]  Disables the CPU Q-fan controller. [Enabled]  Enables the CPU Q-fan controller. The following items appear only when you set CPU Q-Fan Function to [Enabled]. CPU Fan Speed Low Limit [200 RPM] A warning message will appear to remind you that the CPU fan speed is lower than the selected value. Configuration options: [500RPM] [400RPM] [300RPM] [200RPM] [100RPM] [Ignored] Select Fan Type: [PWM Fan] [PWM Fan] S ets to [PWM Fan] when using a 4-pin CPU fan. [DC Fan] S ets to [DC Fan] when using a 3-pin CPU fan. ROG Crosshair IV Formula 3-33