H55 HD BIOS Manual BIOS Setup Introduction T he purpose of this manual is to describe the settings in the AMI BIOS Setup program on this motherboard. The Setup program allows users to modify the basic system configuration and save these settings to CMOS RAM. T he power of CMOS RAM is supplied by a battery so that it retains the Setup information when the power is turned off.
H55 HD BIOS Manual PCI Bus Support T his AMI BIOS also supports Version 2.3 of the Intel PCI (Peripheral Component Interconn ect) local bus speci fication. DRAM S upport DDR3 SDRAM (Double Data Rate III Synchronous DRAM) is supported. Supported CP Us T his AMI BIOS supports the Intel CPU.
H55 HD BIOS Manual 1 Main Menu Once you enter AMI BIOS Setup Utility, the Main Menu will appear on the screen providing an overview of the basic system inform ation. BIOS SETUP UTILITY Main Advanced PCIPnP Boot Chipset Performance Exit System Overview Use [ENTER], [TAB]...
H55 HD BIOS Manual IDE/S ATA Configuration T he BIOS will automatically detect the presence of SAT A/IDE devices. There is a sub-menu fo r each SAT A/IDE device. Select a device and press <Enter> to enter the sub-menu of detailed options. BIOS SETUP UTILITY Main IDE/SATA Configuration...
H55 HD BIOS Manual AHCI Configuration BIOS SETUP UTILITY Main AHCI Settings Enables for supporting AHCI BIOS Support [Enabled] > AHCI Port0 > AHCI Port1 > AHCI Port2 > AHCI Port3 > AHCI Port4 > AHCI Port5 Select Screen Select Item Change Option General Help Save and Exit...
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H55 HD BIOS Manual Device This area shows the detected connected device. SATA Port0/1/2/3/4/5 This item allows you to select the connected device type. Options: Auto (Default) / Not Installed S.M.A.R.T. This item allows you to control the device S.M.A.R.T function. Options: Enabled (Default) / Disabled SATA 1/2/3/4 Device BIOS SETU P U TILITY...
H55 HD BIOS Manual PIO Mode Select the PIO mode. Options: Auto (Default) / 0 / 1 / 2 / 3 / 4 DMA Mode Select the DMA mode. Options: Auto (Default) / SWDMA0 ~ 2 / MWDMA0 ~ 2 / UDMA0 ~ 5 S.M.A.R.T Set the Smart Monitoring, Analysis, and Reporting T echnology.
H55 HD BIOS Manual 2 Advanced Menu T he Advanced Menu allows you to configu re the settings o f CPU, Super I/O, Power Management, and other system devices. Notice Beware of that setting inappropriate values in items of this menu may cause system to malfunction.
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H55 HD BIOS Manual C1E Support C1E is “Enhanced Halt State” function, this f unction helps to save power and decrease heat by lowering CPU frequen cy while the processor is not working. Options: Enabled (Default) / Disabled Hardware Prefetcher T he processor has a hardw are prefetch er that automatically analy zes its requirements and prefetches dat a and instructions from the memory into the Level 2 cache that are likely to be required in the near future.
H55 HD BIOS Manual Execute-Disable Bit Capability T his item allows you to configure th e Execut e Disabled Bit function, which protects your system from buffer overflow attacks. Options: Enabled (Default) / Disabled Intel (R) HT Technology Hyper T hreading T echnology can improve p erfo rmance by splitting instructions into multiple streams.
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H55 HD BIOS Manual Parallel Port Address T his item allows you to determine access onboard p arallel port controller with which I/O Address. Options: 378 (Default) / 278 / 3BC / Disabled Parallel Port Mode T his item allows you to determine how the parallel port should function. Options: Normal (Default) Using Parallel port as Standard Printer Port.
H55 HD BIOS Manual Stroke Keys Selected T his item will show only when Keyboard PowerOn is set “Stroke Key.” Options: Ctrl+F1 (Default) / Wake Key / Power Key / Ctrl+F2 / Ctrl+F3 / Ctrl +F4 / Ctrl+F5 / Ctrl+F6 Mouse PowerOn T his item allows you to control the mouse power on function.
H55 HD BIOS Manual Shutdow n Temperature T his item allows you to set up the CPU shutdown T emperature. This item is only effective under Windows 98 ACPI mode. ℃ ℉ ℃ ℉ 70 /158 ℃ ℉ / 75 / ℃...
H55 HD BIOS Manual Fan Ctrl OFF(℃ ) If the CPU/System T emperature is lower than the set value, FAN will turn off. 0~127 (℃) (Interval: 1℃) Options: Fan Ctrl On(℃ ) CPU/System f an starts to work under smart fan function when arrive this set value. 0~127 (℃) (Interval: 1℃) Options: Fan Ctrl Start Value...
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H55 HD BIOS Manual Suspend mode T he item allows you to select the suspend type under the ACPI operating system. Options: S1 (POS) (Default) Power on Suspend S3 (ST R) Suspend to RAM Auto POS+STR Repost Video on S3 Resume T he item allows you to determine whether to invoke VGA BIOS post on S3/ST R resume.
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H55 HD BIOS Manual High Performance Event Timer T his item allows you to enable or disabled the HPET. Options: Disabled (Default) / Enabled Resume On PME# When you select Enabled, a PME signal from PCI card returns the system to Full ON state.
H55 HD BIOS Manual Onboard PCI/PCI-E Devices Configuration BIOS SETUP UTILITY Advanced Onboard PCI/PCI-E Devices Configuration Options Onboard PCIE Giga LAN [Auto] Auto Onboard LAN Boot ROM [Disabled] Enabled Onboard PATA IDE Controller [Auto] Disabled Onboard LAN MAC ID Select Screen Select Item Change Option General Help...
H55 HD BIOS Manual Intel V T-d Configuration BIOS S ETUP UTILITY Advanced Options Intel VT-d [ Disabled] Disa bled Enab led S elect Screen S elect Item C hange Option G eneral Help F1 0 S ave and Exit ES C E xit vxx.xx (C)C opyright 198 5-200x, Amer ican Megatre nds, Inc.
H55 HD BIOS Manual MPS Rev ision T he BIOS supports version 1.1 and 1.4 of the Intel multiprocessor speci fication. Select version supported by the operating system running on this computer. Option: 1.4 (Default) / 1.1 MPS and ACPI MADT ordering Modern ordering is for Windows XP or later OSes.
H55 HD BIOS Manual Smbios Configuration BIOS S ETUP UTILITY Advanced Smbio s Configurati on SMBI OS SMI Wrapp er supp ort for PnP Func Smbio s Smi Support [Enabled] 50h- 54h S elect Screen S elect Item C hange Option G eneral Help F1 0 S ave and Exit...
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H55 HD BIOS Manual Legacy USB Support T his item determines if the BIOS should provide legacy support fo r USB devices like the keyboard, mouse, and USB drive. T his is a useful feature when using such USB devices with operating systems that do not natively support USB (e.g. Microso ft DOS or Windows NT).
H55 HD BIOS Manual 3 PCIPnP Menu T his section describes con figuring the PCI bus system. PCI, or Personal Computer Interconn ect, is a system which allows I/O devices to operate at speeds nearing the speed o f the CPU itself uses when communicating with its own special components. Notice Beware of that setting inappropriate values in items of this menu may cause system to malfunction.
H55 HD BIOS Manual PCI Latency Timer T his item controls how long a PCI device can hold the PCI bus bef ore another takes over. T he longer the latency, the longer the PCI device can retain control of the bus before handing it over to another PCI device.
H55 HD BIOS Manual DMA Channel 0/1/3/5/6/7 T hese items will allow you to assign each DMA channel a type, depending on the type of device using the channel. T he option “ Available” means the channel is going to assign automatically. Options: Available (Default) / Reserved Reserved Memory Size...
H55 HD BIOS Manual 4 Boot Menu T his menu allows you to setup the system boot options. BIOS SETU P U TILITY Main Advan ced PCIPnP Boot Chipset Performance Exit Boot Settings Specifies the Boot Device Priority sequence. > Boot Device Priority >...
H55 HD BIOS Manual CD/DV D Drives T he BIOS will attempt to arrange the CD/DVD drive boot sequence automatically. You can also change the booting sequence. The number of device items that appears on the screen depends on the number of devices installed in the system. Boot Settings Configuration BIOS SETUP UTILITY Boot...
H55 HD BIOS Manual Wait for ‘F1’ If Error T his BIOS feature controls the system's response when an error is detected during the boot sequence. Options: Enabled (Default) / Disabled Hit ‘DEL’ Message Display T his BIOS feature allows you to control the display o f the Hit “ DEL” to enter Setup message during memory initialization.
H55 HD BIOS Manual 5 Chipset Menu T his submenu allows you to configure the speci fic features of the chipset installed on your system. T his chipset manage bus speeds and access to system memory resources, such as DRAM. It also coordinates communications with the PCI bus. Notice Beware of that setting inappropriate values in items of this menu may cause system to malfunction.
H55 HD BIOS Manual North Bridge Configuration BIOS S ETUP UTILITY Chips et North Bridge Chips et Configura tion ENAB LE: Allow rema pping of Memor y Remap Featu re [Enabled] over lapped PCI m emory Fast MRC [Disabled] abov e the total PCI MMIO Allocat ion: phys ical memory.
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H55 HD BIOS Manual IGD Graphics Mode Select T his item will be different as your memory modules. When the memory size is decided, this f rame bu ffer size will also be fixed. Options: Enabled,32MB (Default) / Enabled,64MB / Enabled,128MB / Disabled PEG Port T his BIOS feature is a toggle that enables or disables the PCI Express port.
H55 HD BIOS Manual DVMT/FIXED Memory Size DVMT stands for “ Dynamic Video Memory T echnology”. T his is an enhancement of the unified memory architecture (UMA) concept. DVMT will set the optimum amount of memory to be allocated for a balance between graphics and system perform ance.
H55 HD BIOS Manual HDA Controller T his item allows you to control the HD Audio support. Options: Enabled (Default) / Disabled Internal HDMI Audio Codec T his item allows you to control enable or disable Internal HDMI Audio Codec. Options: Disabled (Default) / Enabled SMBUS Controller...
H55 HD BIOS Manual 6 Performance Menu T his submenu allows you to change voltage and clock of various devices. (Howev er, we suggest you to use the def ault setting. Changing the voltage and clock improperly may damage the device.) Notice Beware of that setting inappropriate values in items of this menu may cause system to malfunction.
H55 HD BIOS Manual Intel GP U Clock T his item allows you to GPU Clock. Options: Auto (Default) / 133MHz ~ 600MHz DRAM Frequency T his item allows you to control the Memory Clock. Options: Auto (Default) / 800MHz / 1067MHz /1333MHz DRAM Timing Configuration BIOS SETUP UTILITY Performance...
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H55 HD BIOS Manual DRAM tRP Options: 9 (Default) / 3 ~ 15 DRAM tRAS Options: 24 (Default) / 9 ~ 63 DRAM tRRD Options: 4 (Default) / 5 ~ 15 DRAM tWR Options: 10 (Default) / 3 ~ 31 DRAM tWTR Options: 5 (Default) / 4 ~ 31...
H55 HD BIOS Manual Clock Gen Configuration BIOS SETUP UTILITY Performance Clock Gen Configuration Options PCIE Clock By [Auto] Auto PCIE Frequency Setting [100] Manual CPU Clock delay [No delay] PCH Clock delay [No delay] Select Screen Select Item Change Option General Help Save and Exit Exit...
H55 HD BIOS Manual Voltage Control BIOS SETUP UTILITY Performance Voltage Control Options CPU Vcore SPEC CPU VTT Voltage + 5% DRAM Voltage +10% CPU Temperature +15% System Temperature CPU Vcore Voltage [SPEC] DRAM Voltage [Auto] CPU VTT Voltage [1.15V] Select Screen Select Item Change Option...
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H55 HD BIOS Manual C3 State T his item allows you to select Nehalem C state action. Options: ACPI C2 (Default) / ACPI C3 / Disabled C6 State T his item allows you to select Nehalem C state action. Options: Enabled (Default) / Disabled C1 Auto Demotion When enabled, CPU will conditionally demote C3/C6/C7 requests to C1 based on...
H55 HD BIOS Manual 7 Exit Menu T his menu allows you to load the optimal default settings, and save or discard the changes to the BIOS items. BIOS SETU P U TILITY Main Advan ced PCIPnP Boot Chipset Performance Exit Exit Options Exit system setup...
H55 HD BIOS Manual Security T his sub-menu allows you to provide/revise supervisor and user password. BIOS SETU P U TILITY Exit Security Setti ngs Install or Change the password. Supervisor Pas sword :Not Installe d User Password :Not Installe d Change Supervi sor Password User Access Le vel [Ful l Access]...
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H55 HD BIOS Manual Passw ord Check T his item is for setting the timing that checking password. Options: Setup (Default) / Always Boot Sector Virus Protection T his option allows you to choose the VIRUS Warning feature that is used to protect the IDE H ard Disk boot sector.