Asus M4A78LT_LE Owner's Manual Page 58
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2-18 Chapter 2: BIOS information
Power on By PS/2 Keyboard [Disabled]
Enables or disables PS/2 Keyboard to generate a wake event.
Conguration options: [Disabled] [Space Bar] [Power Key] [Ctrl-Esc]
Power On By PS/2 Mouse [Disabled]
When set to [Enabled], this parameter allows you to use the PS/2 mouse to turn on the
system. This feature requires an ATX power supply that provides at least 1A on the +5VSB
lead. Conguration options: [Disabled] [Enabled]
Power on From S5 By RTC Alarm [Disabled]
Enables or disables RTC to generate a wake event. Conguration options: [Disabled]
[Enabled]
2.5.5 HW Monitor Conguration
CPU Temperature [xxxºC/xxxºF] or [Ignored]
MB Temperature [xxxºC/xxxºF] or [Ignored]
The onboard hardware monitor automatically detects and displays the motherboard and CPU
temperatures. Select Ignored if you do not wish to display the detected temperatures.
CPU / Chassis Fan Speed [N/A], [xxxxRPM], or [Ignored]
The onboard hardware monitor automatically detects and displays the CPU / Chassis fan
speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the eld
shows N/A. Select [gnored] if you do not want the detected speed to be displayed.
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage [xx.xxxV] or [Ignored]
The onboard hardware monitor automatically detects the voltage output through the onboard
voltage regulators.
CPU Q-Fan Function [Enabled]
Enables or disables the ASUS Q-Fan feature that smartly adjusts the CPU fan speeds for
more efcient system operation. Conguration options: [Disabled] [Enabled]
The following item appears only when you set CPU Q-Fan Function to [Enabled].
CPU Fan Speed Low Limit [200 RPM]
Allows you to manually set a lower limit for the CPU fan speed. If the CPU fan speed is
below the specied limit, the system sends out warning beeps. Conguration options:
[600 RPM] [500 RPM] [400 RPM] [300 RPM] [200 RPM] [Ignored]
CPU Q-Fan Mode [Standard]
Allows you to set the appropriate performance level of the CPU fan.
[Standard] Sets to [Standard] to make the CPU fan automatically adjust depending
on the CPU temperature.
[Silent] Sets to [Silent] to minimize the fan speed for quiet CPU fan operation.
[Turbo] Set to [Turbo] to achieve maximum CPU fan speed.
[Manual] Allows you to individually set the CPU fan parameters.
2.5.6 Anti Surge Support [Enabled]
Allows you to enable or disable the Anti-Surge protection feature.
Conguration options: [Disabled] [Enabled]
- Motherboard 1
- First Edition (V1) 2
- January 2011 2
- Contents 3
- Safety information 7
- About this guide 7
- Where to nd more information 8
- Typography 8
- (continued on the next page) 9
- Chapter 1 11
- ASUS M4A78LT Series 1-3 13
- C.P.R. (CPU Parameter Recall) 14
- ErP ready 14
- 1.4 Before you proceed 15
- 1.5 Motherboard overview 16
- 1.5.3 Motherboard layout 17
- 1.6.1 Installing the CPU 18
- 1.5.4 Layout contents 18
- CPU FAN PWR 19
- CPU FAN IN 19
- CPU FAN PWM 19
- CPU Heatsink 20
- Retention bracket 20
- Retention bracket lock 20
- Retention Module Base 20
- Channel Sockets 21
- Channel A DIMM_A1 and DIMM_A2 21
- Channel B DIMM_B1 and DIMM_B2 21
- 1.7.2 Memory congurations 22
- DDR3-1600(O.C.)MHz capability 23
- DDR3-1800(O.C.)MHz capability 23
- DDR3-1333MHz capability 24
- DDR3-1066MHz capability 26
- 1.7.3 Installing a DIMM 27
- 1.7.4 Removing a DIMM 27
- 1.8 Expansion slots 28
- 1.9 Jumpers 29
- USBPW5-8 30
- USBPW1-4 30
- 1.10 Connectors 31
- 1.10.2 Internal connectors 32
- M4A78LT Series 33
- SPDIF_OUT 37
- Rotation 38
- 1.11 Software support 39
- Chapter 2 41
- 42
- 2.1.3 ASUS CrashFree BIOS 3 43
- 2.2 BIOS setup program 44
- 2.2.1 BIOS menu screen 45
- 2.2.2 Menu bar 45
- 2.2.3 Navigation keys 45
- Pop-up window 46
- Scroll bar 46
- 2.3 Main menu 47
- 2.4 Advanced menu 49
- Overclock Options [Auto] 50
- PCIE Clock [100] 50
- Memclock Value [400MHz] 51
- 2.4.2 CPU Conguration 52
- 2.4.3 Chipset 53
- ECC Mode [Disabled] 54
- UMA Frame Buffer Size [Auto] 54
- Surround View [Auto] 54
- 2.4.5 PCIPnP 55
- 2.4.6 USB Conguration 56
- 2.5 Power menu 57
- CPU Q-Fan Mode [Standard] 58
- 2.6 Boot menu 59
- 2.6.3 Security 60
- 2.7 Tools menu 61
- 2.8 Exit menu 63
- ASUS contact information 65
- DECLARATION OF CONFORMITY 66
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