Asus manual Jumpers, Clear RTC RAM 3-pin Clrtc, F2A55-M Clear RTC RAM

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1.7Jumpers

Clear RTC RAM (3-pin CLRTC)

This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can clear the CMOS memory of date, time, and system setup parameters by erasing the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in CMOS, which include system setup information such as system passwords.

F2A55-M

CLRTC

1

2

2

3

Normal

Clear RTC

(Default)

 

 

F2A55-M Clear RTC RAM

To erase the RTC RAM:

1.Turn OFF the computer and unplug the power cord.

2.Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3 for about 5-10 seconds, then move the cap back to pins 1-2.

3.Plug the power cord and turn ON the computer.

4.Hold down the <Del> key during the boot process and enter BIOS setup to re- enter data.

Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default position. Removing the cap will cause system boot failure!

• If the steps above do not help, remove the onboard battery and move the jumper again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.

You do not need to clear the RTC when the system hangs due to overclocking. For system failure due to overclocking, use the CPU Parameter Recall (C.P.R.) feature. Shut down and reboot the system, then the BIOS automatically resets parameter settings to default values.

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Chapter 1: Product introduction

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Contents Motherboard E7489 First Edition August Contents Bios information Ai Tweaker menuAppendices CPU / PWR / Chassis Fan Speed xxxx RPM or Ignore / N/AElectrical safety Safety informationOperation safety About this guide Where to find more informationHow this guide is organized Typography Conventions used in this guideBold text F2A55-M specifications summary ASMedia USB3.0 ControllerAsus Quiet Thermal Solution Asus unique features Asus Digital Power DesignAsus Exclusive Features Precision TweakerBack Panel I/O ports Package contents Special features Product highlightsInnovative Asus features DIGI+VRMAsus Quiet Thermal Solution Asus MyLogo2 Asus CrashFree BiosBefore you proceed Asus EZ FlashMotherboard overview Placement directionScrew holes Motherboard layout F2A55-MLayout contents Accelerated Processing Unit APUInstalling the APU APU heatsink and fan assembly installation To install the APU heatsink and fan assemblyTo uninstall the APU heatsink and fan assembly Overview System memoryF2A55-M 240-pin DDR3 Dimm sockets Memory configurations DDR3-2250 O.C. MHz capabilityDDR3-2000 O.C. MHz capability DDR3-2200 O.C. MHz capabilityDDR3-2133 O.C. MHz capability DDR3-1866 O.C. MHz capabilityDDR3-1600 MHz capability DPLD9UDDR3-1333 MHz capability On the next Product introduction OJD12D9LGK DDR3-1066 MHz capability Dimm supportInstalling a Dimm Removing a DimmExpansion slots Installing an expansion cardConfiguring an expansion card PCI slotPCI Express x16 slots IRQ assignments for this motherboardClear RTC RAM 3-pin Clrtc JumpersF2A55-M Clear RTC RAM Rear panel connectors ConnectorsLAN port LED indications Audio 2, 4, 6, or 8-channel configuration ChannelF2A55-M Front panel audio connector Internal connectorsFront panel audio connector 10-1 pin Aafp Digital audio connector 4-1 pin SpdifoutF2A55-M ATX power connectors ATX power connectors 24-pin EATXPWR, 4-pin ATX12VTPM connector 20-1 pin TPM F2A55-M Serial port COM connector Serial port connector 10-1 pin COMF2A55-M Fan connectors USB connectors 10-1 pin USB56, USB78, USB910 F2A55-M USB2.0 connectorsF2A55-M Sata 3.0Gb/s connectors AMD A55 Serial ATA 3.0Gb/s connectors 7-pin SATA3G1~6 blueF2A55-M System panel connector System power LED 2-pin Pled MemOK! switch Onboard switchesF2A55-M MemOK! switch Standby Power LED GPU Boost switchF2A55-M GPU Boost switch Onboard LEDsGPU Boost LED F2A55-M GPU Boost LEDSupport DVD information Installing an operating systemSoftware support To run the Support DVDInstalling Asus Update Managing and updating your BiosAsus Update utility Updating the BiosTo update the Bios using EZ Flash Asus EZ FlashRecovering the Bios Asus CrashFree Bios 3 utilityTo recover the Bios Before updating Bios Asus Bios UpdaterBooting the system in DOS environment Updating the Bios file To update the Bios file using Bios UpdaterEntering Bios Setup after Post Bios setup programEntering Bios Setup at startup To enter Bios Setup at startupBios menu screen EZ ModeAdvanced Mode Menu barBack button Configuration fieldsMenu items Submenu itemsSystem Date Day xx/xx/xxxx Main menuSystem Language English System TimeTo set an administrator password Administrator PasswordUser Password To change an administrator passwordAi Tweaker menu Scroll down to display the following items Memory Frequency Auto EPU Power Saving Mode DisabledAi Overclock Tuner Auto APU Multiplier AutoOC Tuner CPU Voltage Offset ModeGPU Boost Auto Dram Timing Control12 1.1Vsb Voltage Auto Dram Voltage Auto11 SB 1.1V Voltage Auto 13 APU1.2V Voltage AutoCPU/NB Current Capability 100% CPU Power Phase Control StandardCPU Power Duty Control T.Probe CPU Voltage Frequency AutoCPU Configuration Advanced menuSata Configuration NB Configuration USB ConfigurationOnboard Devices Configuration 6 APM Network Stack Monitor menu CPU Temperature / MB Temperature xxxºC/xxxºFCPU / PWR / Chassis Fan Speed xxxx RPM or Ignore / N/A CPU Fan Speed Low Limit 200 RPM CPU Q-Fan Control EnabledChafan Q-Fan Control Enabled Chafan Fan Speed Low Limit 600 RPMCPU Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage Anti Surge Support EnabledChafan Fan Profile Standard Boot menu Fast Boot Enabled Bootup NumLock State OnFull Screen Logo Enabled Post Logo Delay Time 3 secSecurity Boot parameters Next boot after AC Power Loss Normal BootCSM Parameters Boot Option Priorities Setup Mode EZ ModeBoot Override Asus SPD Information Tools menuAsus EZ Flash 2 Utility Asus O.C. ProfileExit menu Getting started Appendices Federal Communications Commission StatementIC Canadian Compliance Statement Canadian Department of Communications StatementAsus Recycling/Takeback Services ReachAsus Computer International America Asus contact informationASUSTeK Computer INC Asus Computer GmbH Germany and AustriaDeclaration of Conformity EC Declaration of ConformityAppendices