Biostar H55A User manual

H55A+ BIOS Manual
i
BIOS Setup.................................................................................................1
1Main Menu...............................................................................................3
2Advanced Menu.......................................................................................8
3PCIPnP Menu........................................................................................22
4Boot Menu..............................................................................................25
5Chipset Menu.........................................................................................28
6Performance Menu...............................................................................33
7Exit Menu...............................................................................................36

H55A+ BIOS Manual
1
BIOS Setup
Introduction
The 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. The power of CMOS
RAM is supplied by abattery so that it retains theSetup informationwhen the power
is turned off.
Basic Input-Output System (BIOS) determines what a computer can do without
accessing programs from a disk. This system controls most of the input and output
devices such as keyboard, mouse, serial ports and disk drives. BIOS activates at the
first stage ofthe booting process, loading and executing the operating system. Some
additional features, such as virus and password protection or chipset fine-tuning
options are also included in BIOS.
The rest of this manual will to guide you through the options and settings in BIOS
Setup.
Plugand Play Support
ThisAMI BIOS supports thePlug and Play Version 1.0A specification.
EPA Green PC Support
ThisAMI BIOS supports Version 1.03 ofthe EPA Green PC specification.
ACPI Support
AMI ACPI BIOS support Version 1.0/2.0 of Advanced Configuration and Power
interface specification (ACPI). It provides ASL code for power management and
device configuration capabilities as defined in theACPI specification, developed by
Microsoft, Intel andToshiba.

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PCI Bus Support
This AMI BIOS also supports Version 2.3 of the Intel PCI (Peripheral Component
Interconnect) local bus specification.
DRAM Support
DDR3 SDRAM (Double Data Rate III Synchronous DRAM) is supported.
Supported CPUs
ThisAMI BIOS supports the Intel CPU.
Using Setup
When starting up the computer, press
<Del> during the Power-On Self-Test
(POST) to enter theBIOS setup utility.
In the BIOS setup utility, you will see
General Help description at the top right
corner, and this is providing a brief
description of the selected item.
Navigation Keys for that particular menu
are at the bottom right corner, and you can
use these keys to select item and change
the settings.
Notice
zThe default BIOS settings applyfor most conditions to ensure optimum performance
of the motherboard. If the system becomes unstable after changing any settings,
please load the default settings to ensure system’s compatibility and stability. Use
Load Setup Default under the Exit Menu.
zFor better system performance, the BIOS firmware is being continuously updated.
The BIOS information described in this manual isfor yourreferenceonly. The actual
BIOS information and settings on board may be slightly different from this manual.
zThe content ofthis manual is subject to be changed without notice. We will not be
responsible for any mistakes found in this user’s manual and any system damage that
may be caused by wrong-settings.
General Help
Navigation Keys

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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 information.
BIOS SETUP UTILITY
Main Advanced PCIPnP Boot Chipset Performance
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Field
Select Field
General Help
Save and Exit
Exit
+-
Tab
F1
F10
ESC
Use [ENTER], [TAB]
or [SHIFT-TAB] to
select a field.
Use [+] or [-] to
configure system Time.
System Overview
AMI BIOS
System Memory
[ :00:00]
System Date [Fri 01/01/2010]
> IDE/SATA Configuration
Version :01.01.01
Build Date:01/01/10
Size :
System Time 00
Exit
AMI BIOS
Shows systeminformation including BIOS version, built date, etc.
System Memory
Shows systemmemory size, VGA shard memory will be excluded..
System Time
Set the systeminternal clock.
System Date
Set the system date. Note that the ‘Day’ automatically changes when you set the
date.

H55A+ BIOS Manual
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IDE/SATA Configuration
The BIOS will automatically detect the presence of SATA/IDE devices. There is a
sub-menu for each SATA/IDE device. Select a device and press <Enter> to enter
the sub-menu ofdetailed options.
BIOS SETUP UTILITY
Main
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Go to Sub Screen
General Help
Save and Exit
Exit
Enter
F1
F10
ESC
IDE/SATA Configuration
SATA#1 Configuration [Compatible]
> SATA 1 Device
> SATA 2 Device
> SATA 3 Device
> SATA 4 Device
> SATA 5 Device
Hard Disk Write Protect [Disabled]
IDE/SATA Detect Time Out(Sec)[35]
ATA(PI)80Pin Cable Detection [Host & Device]
SATA#2 Configuration [Enhanced]
> SATA 6 Device
Configure SATA as [IDE]
> AHCI Configuration
Options
IDE
AHCI
Disabled
Configure SATA as
Thisitem allows you to choose theSATA operation mode.
Options: IDE (Default) / AHCI / Disabled
SATA#1 Configuration
Thisitem allows you to control theonboard SATAcontroller.
Options: Compatible(Default)/ Enhanced
SATA#2 Configuration
Thisitem allows you to control theonboard SATAcontroller.
Options: Enhanced (Default) / Disabled

H55A+ BIOS Manual
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AHCI Configuration
BIOS SETUP UTILITY
Main
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
AHCI Settings
> AHCI Port0
> AHCI Port1
> AHCI Port2
> AHCI Port3
> AHCI Port4
AHCI BIOS Support [Enabled]
> AHCI Port5
Enables for supporting
AHCI BIOS Support
ThisBIOS feature controls the AHCI function of the SATA controller.
Options: Enabled (Default) / Disabled
AHCI Port0/Port1/Port2/Port3/Port4/Port5
BIOS SETUP UTILITY
Main
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
AHCI Port0
S.M.A.R.T. [Enabled]
Device :
AHCI Port0 [Auto]
Select the type
of device connected
to the system.

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Device
This areashows 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 thedevice S.M.A.R.T function.
Options: Enabled (Default) / Disabled
SATA1/2/3/4/5/6 Device
BIOS SETUP UTILITY
Main
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
Select the type
of device connected
to the system.
SATA1 Device
LBA/Large Mode [Auto]
Block (Multi-Sector Transfer)[Auto]
PIO Mode [Auto]
DMA Mode [Auto]
S.M.A.R.T [Auto]
32Bit Data Transfer [Enabled]
Device :
Type [Auto]
The BIOS detects the information and values of respective devices, and these
information and values are shown below to the name of thesub-menu.
Type
Select the typeofthe IDE/SATA drive.
Options: Auto (Default) / CDROM / ARMD / Not Installed
LBA/Large Mode
Enable or disable the LBA mode.
Options: Auto (Default) / Disabled
Block (Multi-Sector Transfer)
Enable or disable multi-sector transfer.
Options: Auto (Default) / Disabled

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PIOMode
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 ReportingTechnology.
Options: Auto (Default) / Disabled / Enabled
32Bit Data Transfer
Enable or disable 32-bit data transfer.
Options: Enabled (Default) / Disabled
Hard Disk Write Protect
Disable or enable device write protection. This will be effective only if the device
is accessed through BIOS.
Options: Disabled (Default) / Enabled
IDE Detect Time Out (Sec)
Select the time out value for detecting IDE/SATA devices.
Options: 35 (Default)/ 30 / 25/ 20 / 15 / 10 / 5 / 0
ATA(PI) 80Pin Cable Detection
Select the mechanism for detecting 80Pin ATA(PI) Cable..
Options: Host & Device (Default) / Host / Device

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2Advanced Menu
The Advanced Menu allows you to configure thesettings ofCPU, Super I/O, Power
Management, and othersystem devices.
Notice
zBeware of that setting inappropriate values in items of this menu may cause
system tomalfunction.
BIOS SETUP UTILITY
Main Advanced PCIPnP Boot Chipset Performance
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Go to Sub Screen
General Help
Save and Exit
Exit
Enter
F1
F10
ESC
Configure CPU.Advanced Settings
WARNING: Setting wrong values in below sections
may cause system to malfunction.
> SuperIO Configuration
> Hardware Health Configuration
> Smart Fan Configuration
> ACPI Configuration
> Onboard PCI/PCI-E Devices Configuration
> Intel VT-d Configuration
> MPS Configuration
> PCI Express Configuration
> Smbios Configuration
> USB Configuration
> CPU Configuration
Exit
CPU Configuration
Thisitem shows theCPU information that theBIOS automatically detects.
BIOS SETUP UTILITY
Advanced
vxx.xx (C)Copyright 198 5-200x, Amer ican Megatre nds, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
This should be enabled
in order to enab le or
disable the “Enh anced
Halt State”.
Configure advanced CPU settings
Module Version:01. 04
Manufacturer:Intel CPU
Frequency :
BCLK Speed :
Cache L1 :
Cache L2 :
Ratio Status:
Ratio Actual Value:
Cache L3 :
CIE Support [Enabled]
Hardware Prefetche r [Enabled]
Adjacent Cache Lin e Prefetch [Enabled]
Max CPUID Value Li mit [Disabled]
Execute-Disable Bi t Capability [Enabled]
Intel(R) Virtualiz ation Tech [Enabled]
CPU TM function [Enabled]

H55A+ BIOS Manual
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C1E Support
C1E is “Enhanced Halt State” function, this function helps to save power and
decrease heat by lowering CPU frequency while the processor is not working.
Options: Enabled (Default) / Disabled
Hardware Prefetcher
The processor has a hardware prefetcher that automatically analyzes 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. This reduces the latency associated with
memory reads.
Options: Enabled (Default) / Disabled
Adjacent Cache Line Prefetch
The processor has a hardware adjacent cache line prefetch mechanism that
automatically fetches an extra 64-byte cache line whenever the processor requests for
a 64-byte cache line. This reduces cache latency by making the next cache line
immediately available ifthe processor requires it as well.
Options: Enabled (Default) / Disabled
Max CPUID Value Limit
When the computer is booted up, the operating system executes the CPUID
instruction to identify the processor and its capabilities. Before it can do so, it must
first query the processor to find out the highest input value CPUID recognizes. This
determines thekind ofbasic information CPUID can provide the operating system.
Options: Disabled (Default) / Enabled
Intel(R) Virtualization Tech
Virtualization Technology can virtually separate your system resource into several
parts, thus enhance the performance when running virtual machines or multi
interface systems.
Options: Enabled (Default) / Disabled
CPUTM Function
The CPU TM Function is to throttle the clock speed ofhigher speed Prescott's to
help keep them cool.
Options: Disabled (Default) / Enabled

H55A+ BIOS Manual
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Execute-Disable Bit Capability
Thisitem allows you to configure the Execute Disabled Bit function, which protects
yoursystem from buffer overflow attacks.
Options: Enabled (Default) / Disabled
Intel (R) HT Technology
Hyper Threading Technology can improve performance by splitting instructions into
multiple streams.
Options: Enabled (Default) / Disabled
Active ProcessorCores
Thisitem allows you to set the number ofcores to enable in each processor package.
Options: All (Default) / 1 / 2
A20M
Legacy OSes and APs may need A20M enabled.
Options: Disabled (Default) / Enabled
SuperIO Conf iguration
BIOS SETUP UTILITY
Advanced
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
Allows BIOS to Select
Serial Port1 Base
Addresses.
Configure ITE8721 Super IO Chipset
Serial Port1 Address [3F8/IRQ4]
Parallel Port Mode [378]
Parallel Port Mode [Normal]
Parallel Port IRQ [IRQ7]
Onboard CIR Port [Disabled]
Keyboard PowerOn [Disabled]
Mouse PowerOn [Disabled]
Restore on AC Power Loss by IO[Power Off]
Serial Port1Address
Select an address and corresponding interrupt for the first and second serial ports.
Options: 3F8/IRQ4 (Default) / 2F8/IRQ3 / 3E8/IRQ4 / 2E8/IRQ3/ Auto / Disabled

H55A+ BIOS Manual
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Parallel Port Address
This item allows you to determine access onboard parallel port controller with which
I/O Address.
Options: 378 (Default) / 278 / 3BC / Disabled
Parallel PortMode
Thisitem allows you to determine how the parallel port should function.
Options: Normal (Default) Using Parallel port as Standard Printer Port.
EPP Using Parallel Port as Enhanced Parallel Port.
ECP Using Parallel port as Extended Capabilities Port.
ECP+EPP Using Parallel port as ECP& EPP mode.
ECP Mode DMA Channel
Thisitem allows you to select parallel port ECP DMA.
Options: DMA3 (Default) / DMA0 / DMA1
Parallel Port IRQ
Thisitem allows you to select the IRQ for the onboard parallel port.
Options: IRQ7 (Default) / IRQ5 / Disabled
OnBoard CIR Port
Thisitem allows you to select consumer IR port.
Options: Disabled (Default) / Enabled
CIR Port IRQ
Thisitem allows you to select consumer IR port IRQ.
Options: IRQ10 (Default) /IRQ3 / IRQ4 / IRQ11
Keyboard PowerOn
Thisitem allows you to control thekeyboard power on function.
Options: Disabled (Default) / Specific Key / Stroke Key / Any Key
Specific KeyEnter
Thisitem will showonly when Keyboard PowerOn is set “Specific Key.”

H55A+ BIOS Manual
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Stroke KeysSelected
Thisitem will showonly 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
MousePowerOn
Thisitem allows you to control themouse power on function.
Options: Disabled (Default) / Enabled
Restore on AC Power Loss
Thissetting specifies how your system should behave aftera power fail or interrupts
occurs. By choosing Disabled will leave the computer in the power off state.
Choosing Enabled will restore the system to the status before power failure or
interrupt occurs.
Options: Power Off(Default)/ Power ON / LastState
Hardware HealthConfiguration
Thisitem shows the system temperature, fan speed, and voltage information.
Advanced
Hardware Health Configuration
H/W Health Function [Enabled]
Shutdown Temperature [Disabled]
CPU Temperature
System Temperature
CPU FAN
System1 FAN
System2 FAN
+12.0V
+5.00V
CPU Vcore
Integrated GPU Voltage
CPU VTT Voltage
DRAM Voltage
BIOS SETUP UTILITY
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
Enables Hardware
Health Monitoring
Device.
H/W Health Function
If with a monitoring system, the system willshowPChealth status duringPOST stage.
Options: Enabled (Default) / Disabled

H55A+ BIOS Manual
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Shutdown Temperature
This item allows you to set up the CPU shutdown Temperature. This item is only
effective under Windows 98 ACPImode.
Options: Disabled (Default) / 60 /140 / 65 /149 /℃℉℃℉70 /158℃℉/ 75 /℃167℉
/ 80 /℃176 / 85 /℉℃185 / 90 /℉℃194℉
Smart Fan Configuration
BIOS SETUP UTILITY
Advanced
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
When you choice [Auto]
please run the
calibration to define
the Fan parameters for
Smart Fan control
Smart Fan Configuration
CPU Smart Fan [Disabled]
Smart Fan Calibration
Control Mode
Fan Ctrl OFF( C)
o
Fan Ctrl On( C)
Fan Ctrl Start value
Fan Ctrl Sensitive
o
CPUSmartFan
Thisitem allows you to control theCPUSmart Fan function.
Options: Disabled (default) / Auto
Smart Fan Calibration
Choose this item and then the BIOS will auto test and detect the CPU/System fan
functions and show CPU/Systemfan speed.
Control Mode
Thisitem provides several operation modes ofthefan.
Options: Quiet / Performance/ Manual

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Fan Ctrl OFF(℃ )
IftheCPU/System Temperatureis lowerthan theset value, FAN will turn off.
Options: 0~127 (℃) (Interval: 1℃)
Fan Ctrl On(℃ )
CPU/System fan starts to work under smart fan function when arrivethis set value.
Options: 0~127 (℃) (Interval: 1℃)
Fan Ctrl Start Value
When CPU/System temperature arrives to the set value, the CPU/System fan will
work under Smart Fan Functionmode.
Options: 0~127 (Interval: 1)
Fan Ctrl Sensitive
Increasing the value will raise the speed of CPU/System fan.
Options: 1~127 (Interval: 1)
Power Configuration
BIOS SETUP UTILITY
Advanced
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
ACPI Settings
EuP Control [Disabled]
Suspend mode [S1(POS)]
Repost Video on S3 Resume [NO]
ACPI Version Features [ACPI v1.0]
ACPI APIC support [Enabled]
AMI OEMB table [Enabled]
Headless mode [Disabled]
APIC ACPI SCI IRQ [Disabled]
USB Device Wakeup From S3/S4 [Disabled]
High Performance Event Timer [Disabled]
Resume On PME# [Disabled]
Resume On RING [Disabled]
Resume On RTC Alarm [Disabled]
EuP Control
Thisitem is used to enable or disable EuP Control (Energy Using Products).
Options: Disabled (Default) / Enabled

H55A+ BIOS Manual
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Suspend mode
The item allows you to select the suspend type under the ACPI operating system.
Options: S1 (POS) (Default) Power on Suspend
S3(STR) Suspend toRAM
Auto POS+STR
Repost Video on S3 Resume
The item allows you to determine whether to invoke VGA BIOS post on S3/STR
resume.
Options: No (Default) / Yes
ACPI Version Features
The item allows you to select the version of ACPI.
Options: ACPI v1.0 (Default)/ ACPI v2.0 / ACPI v3.0
ACPI APIC support
This item is used to enable or disable the motherboard's APIC (Advanced
Programmable Interrupt Controller). The APIC provides multiprocessor support,
moreIRQs and faster interrupt handling.
Options: Enabled (Default) / Disabled
AMI OEMB table
Set this valueto allowthe ACPIBIOS toadd a pointer to an OEMBtable in theRoot
System Description Table (RSDT) table.
Options: Enabled (Default) / Disabled
Headless mode
This is a server-specific feature. A headless server is one that operates without a
keyboard, monitor or mouse. To run in headless mode, both BIOS and operating
system (e.g. WindowsServer 2003) must supportheadless operation.
Options: Disabled (Default) / Enabled
APICACPI SCI IRQ
Options: Disabled (Default) / Enabled
USBDevice Wakeup from S3/S4
Thisitem allows you to enable or disabled the USB resumefrom S3/S4 function.
Options: Disabled (Default) / Enabled

H55A+ BIOS Manual
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High Performance Event Timer
Thisitem allows you to enable or disabled the HPET.
Options: Disabled (Default) / Enabled
Resume OnPME#
When you select Enabled, a PME signalfrom PCIcard returns the system toFull ON
state.
For this function to work, you may need a LAN add-on card which supports the
Wake on LAN function. Set the Wake on LAN (WOL) jumper on motherboard to
enable i f applicable.
Options: Disabled (Default) / Enabled
Resume on RING
Thisitem allows you control the wake on ring function.
Options: Disabled (Default) / Enabled
Resume On RTC Alarm
When “Enabled”, you can set the date and time at which the RTC (real-time clock)
alarm awakens the system from Suspend mode.
Options: Disabled (Default) / Enabled
RTC Alarm Date (Days)
You can choose which date the system will boot up.
System Time
You can choose the system boot up time, input hour, minute and second to specify.

H55A+ BIOS Manual
17
Onboard PCI/PCI-E Devices Configuration
BIOS SETUP UTILITY
Advanced
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
Onboard PCI/PCI-E Devices Configuration
Onboard PCIE Giga LAN [Auto]
Onboard LAN Boot ROM [Disabled]
Onboard LAN MAC ID :
Options
Auto
Enabled
Disabled
Onboard PCIE Giga LAN
Thisitem allows you to control theonboard LAN.
Options: Auto (Default) / Enabled / Disabled
Onboard LAN BootRom
Thisitem allows you to select the Onboard LAN Boot ROM.
Options: Disabled (Default) / Enabled
Onboard PATA IDE Controller
Thisitem allows you to select PATA IDE Controller operate mode.
Options: Auto (Default) / Enabled / Disabled
Onboard LAN MAC ID
Thisitem shows the LAN MACID.

H55A+ BIOS Manual
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Intel VT-d Configuration
BIOS SETUP UTILITY
Advanced
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
Intel VT-d [Disabled] Options
Disabled
Enabled
Intel VT-d
Intel(R) Virtualization Technology for Directed I/O (VT-d) provides hardware
assists for virtualization, improving security, reliability, and performance of I/O
devices in virtualized environment.
Options: Disabled (Default) / Enabled
MPS Configuration
BIOS SETUP UTILITY
Advanced
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
MPS Configuration
MPS Revision [1.4]
MPS and ACPI MADT ordering [Modern ordering]
Select MPS
Revision.

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19
MPSRevision
The BIOS supports version 1.1 and 1.4 ofthe Intel multiprocessor specification.
Select version supported by theoperating system running on this computer.
Option: 1.4 (Default) / 1.1
MPSand ACPI MADT ordering
Modern ordering is forWindows XP orlater OSes. Legacy ordering is for Windows
2000 or earlier OSes.
Option: Modern ordering (Default) / Legacy ordering
PCI Express Configuration
BIOS SETUP UTILITY
Advanced
vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
+-
F1
F10
ESC
PCI Express Configuration
Active State Power-Management [Disabled]
Enable/Disable
PCI Express L0s and
L1 link power
states.
Active State Power-Management
Enable or disable PCI Express L0s and L1 link power states.
Option: Disabled (Default) / Enabled