Biostar B75MU3 User manual

B75MU3+ UEFI BIOS Manual
i
UEFI BIOS Setup...................................................................................... 1
1 Main Menu ............................................................................................. 3
2 Advanced Menu...................................................................................... 4
3 Chipset Menu ....................................................................................... 23
4 Boot Menu............................................................................................. 33
5 Security Menu ...................................................................................... 35
6 Performance ......................................................................................... 36
7 Exit Menu ............................................................................................. 41

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UEFI BIOS Setup
Introduction
The purpose of this manual is to describe the settings in the AMI UEFI BIOS Setup
program on this motherboard. The Setup program allows users to modify the basic
system configuration and save these settings to NVRAM.
UEFI BIOS determines what a computer can do without accessing programs from a
disk. This system controls most of the input and outp ut devices such as keybo ard,
mouse, serial ports and dis k drives. BIOS activates at the firs t stage o f the booting
process, loading and executing the operating system. Some additional features, s uch
as virus and pass word protection or chipset fine-tuning options are also included in
UEFI BIOS.
The rest of this manual will to guide you through the options and settings in UEFI
BIOS Setup.
Plug and Play Support
This AMI UEFI BIOS supports the Plug and Play Vers ion 1. 0A spec ific ation.
EPA Green PC Support
This AMI UEF I BIOS s upports Vers ion 1.03 of the EPA Green PC spec ification.
ACPI Support
AMI ACP I UEFI BIOS s upport Vers io n 1.0/2. 0 of Advanced Configuration and
Power interfac e sp ecification (ACPI). It provides ASL code for po wer management
and device configuration capabilities as defined in the ACPI specification, developed
by Microsoft, Intel and Toshiba.
PCI Bus Support
This AMI UEFI BIOS also s upports Vers ion 2.3 of the Intel PC I (P eripheral
Component Interconnect) local bus specification.
DRAM Support
DDR3 SDRAM (Double Data Rate III Synchronous DRAM) is supported.

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Supported CPUs
This AMI UEF I BIOS s uppo rts the Intel CPU.
Using Setup
When starting up the computer, press
<Del> during the Power-On Self-Test
(POST) to enter the UEFI BIOS setup
utility.
In the UEFI 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 thes e keys to select item and change
the settings.
Notice
zThe default UEFI BIOS settings apply for most conditions to ensure optimum
performance of the motherboard. If the s ystem beco mes 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 UEFI BIOS firmware is being continuously
updated. T he UEFI BIOS information d escribed in this manual is for your reference
only. The actual UEFI BIOS information and settings on board may be slightly
different from this manual.
zThe content of this 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 c aused by wrong-s ettings.

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1 Main Menu
Once you enter AMI UEFI BIOS Setup Utility, the Main Menu will appear on the
screen providing an overview of the basic system information.
BIOS Information
Shows system information including UEFI BIOS version, model name, marketing
name, built date, etc.
Total Memor y
Shows system memory size, VGA s hard memory will be excluded.
System Date
Set the system date. Note that the ‘Day’ automatically changes when you set the
date.
System Time
Set the s ystem internal clock.
Access Level
Shows the access level of current user.

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2 Advanced Menu
The Advanced Menu allows you to configure the settings of CPU, Super I/O, Power
Management, and other system devices.
Notice
zBeware of that setting inappropriate values in items of this menu may cause
system to malfunction.
PCI Subs ystem Settings

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PCI ROM Priority
In case of multiple option ROMs (Legacy and EFI Compatible), this item specifies
what PCI Option ROM to launch
Optio ns: Legacy ROM (Default) / EFI Compatible ROM
Above 4G Decoding
Enables or disables 64bit capable device to be decoded in above 4G address space
(o nly if s ys tem support 64 bit P CI d ecoding).
Options: Disabled (Default) / Enabled
PCI Latency Timer
This item sets the value to be programmed into PCI Latency Timer Register.
Optio ns: 32 PCI Bus Cloc ks (Default) / 64 PCI Bus Clocks / 96 PCI Bus Cloc ks /
128 PCI Bus Clocks / 160 PCI Bus Clocks / 192 PCI Bus Clocks / 224
PCI Bus Clocks / 248 PCI Bus Cloc ks
VGA Palette Snoop
Enables or disables VGA palette registers snooping.
Options: Disabled (Default) / Enabled
PERR# Generation
Enables or disables PCI device to generate SERR#.
Options: Disabled (Default) / Enabled
SERR# Generation
Enables or disables PCI device to generate SERR#.
Options: Disabled (Default) / Enabled

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PCI Express Settings
Relaxed Ordering
Enables or disables PCI express device No snoop option.
Options: Disabled (Default) / Enabled
Extended Tag
If enabled allows d evice to use 8-bit tab field as a requester.
Options: Disabled (Default) / Enabled
No Sn oop
This item enables or disables PCI Express Device No Snoop option.
Options: Enabled (Default) / Disabled
Maximum Payload
This item sets Maximum Payload of PCI Express Device or allows System BIOS to
select the value.
Options: Auto (Default) / 128 Bytes / 256 Bytes / 512 Bytes / 1024 Bytes / 2048
Bytes / 4096 Bytes
Maximum Read Request
This item sets Maximum Read Request Size of PCI Express Device or allows
System BIOS to select the value.
Options: Auto (Default) / 128 Bytes / 256 Bytes / 512 Bytes / 1024 Bytes / 2048
Bytes / 4096 Bytes

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ASPM
This item sets the ASPM (Active State Power Management Settings) Level: Force
L0 – Force all links to LO State; Auto – BIOS auto configures; Disabled – Disables
ASPM.
Options: Disabled (Default) / Auto / Force L0s
Extend Synch
If enabled allows generation of extended synchronization patterns.
Options: Disabled (Default) / Enabled
Link Training Retry
Defines number of retry attempts software will take to retrain the link if previous
training attempt was unsuccessful.
Optio ns: 5 (Default) / Disabled / 2 / 3
Link Training Timeout(uS)
Defines number of microseconds software will wait before polling ‘Link Training’
bit in link status register. Value range from 10 to 1000 uS.
Options: 100 (Default)
Unpopulated Links
In order to save power, software will disable unpopulated PCI Express links, if this
option set to ‘ Disable Link’.
Options: Keep Link ON (Default) / Disable Link
ACPI Settings

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ACPI Sleep State
This item selects the highest ACPI s leep state the system will enter when the
SUSPEND button is pressed.
Options: S1 (CPU Stop Clock) (Default) / Suspend Disabled / S3 (Suspend to
RAM)
Restore AC Power Loss
This setting specifies how your system should behave after a power fail or interrupts
occurs. Power Off: Leaving the system in power-off status after power recovers.
Power O N: Po wering o n t he s ys tem immed iately when po wer returns. Last S tate: 1.
Leaving the system in power-off if the system shuts down at DC off status; 2.
Powering on the system immediately if the system shuts down at DC on status.
Options: Power Off (Default) / Power On / Last State
PME Wake up from S5
This item enables the system to wake from S5 using PEM event.
Options: Disabled (Default) / Enabled
Wake system with Fixed Time
This item enables or disables the system to wake on by alarm event. When this item
is enabled, the system will wake on the hr::min::sec specified.
Options: Disabled (Default) / Enabled
Wake up date
You can choose which date the system will boot up.
Wake up hour / Wake up minute / Wake up second
You can choos e the system boot up time, input ho ur, minute and second to specify.
Ring-In Wake up from S5
This item enables the system to wake from S5 using Ring-In event.
Options: Disabled (Default) / Enabled

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PS2 Keyboard PowerOn
This item allows you to control the keyboard power on function.
Options: Disabled (Default) / Any Key / Stroke Key / Specific Key
Stroke Keys Selected
This item will show only when Keyboard PowerOn is set “Stroke Key.”
Optio ns: Wake Key (Default) / Power Key / Ctrl+F1 / Ctrl+F2 / Ctrl+F 3 /
Ctrl +F4 / Ctrl+F5 / Ctrl+F6
Specific Key Enter
This item will show only when Keyboard PowerOn is set “Specific Key.” Press
Enter to set Specific key.
PS2 Mouse PowerOn
This item allows you to control the mouse power on function.
Options: Disabled (Default) / Enabled
USB Device Wakeup from S3/S4
This item allo ws you to enab le or d isabled the USB res ume from S3/S4 function.
Options: Disabled (Default) / Enabled
CPU Configuration

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Active Processor Cores
This item sets number of cores to enable in each processor package.
Options: All (Default) / 1 / 2 / 3
Limit CP UID Maximum
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 the kind of basic information CPUID can provide the operating system.
Options: Disabled (Default) / Enabled
Execute-Disable Bit
XD can prevent certain classes of malicious buffer overflow attacks when combined
with a supporting OS (Windows Server 2003 SP1, Windows XP SP2, SuSE Linux
9.2, RedHat Enterp ris e 3 Update 3.).
Options: Enabled (Default) / Disabled
Intel Virtualization Tech
Virtualization Tec hnology can virtually separate your system resource into several
parts, thus enhance the performance when running virtual machines or multi
interface s ystems.
Options : Disabled (Default) / Enabled
Hardware Prefetcher
The processor has a hardware prefetcher that automatically analyzes its requirements
and prefetches data and instructions from the memory into the Level 2 c ache 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 hard ware adjac ent c ache line prefetch mechanis m that
automatically fetches an extra 64-byte cache line whenever the processor requests for
a 64-byte cache line. This reduces cac he latenc y by making the next cache line
immediately available if the processor requires it as well.
Options: Enabled (Default) / Disabled

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SATA Configuration
SATA Controller(s)
This item enables/disables Serial ATA Device.
Options: Enabled (Default) / Disabled
SATA Mode Selection
This item determines how SATA controller(s) operate.
Options: IDE (Default) / AHCI
Aggressive LPM Support
This item enables PCH to aggressively enter link power state.
Options: Disabled (Default) / Enabled
SATA Controller Speed
This item indicates the maximum speed the SATA controller can support.
Options: Gen3 (Default) / Gen1 / Gen2

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Intel(R) Rapid Start Technology
Intel(R) Rapid Start Technology
This item enables/disables Intel(R) Rapid Start Technology.
Options: Disabled (Default) / Enabled
Entry on S3 RTC Wake
This item sets iFFS invocation upon S3 RTC wake .
Options: Enabled (Default) / Disabled
Entry After
This item enables RTC wake timer at S3 entry.
Options: 10 minutes (Default) / Immediately / 1 minute / 2 minutes / 5 minutes / 15
minutes / 30 minutes / 1 hour / 2 hours
Active Page Threshold Support
This item allows system to suppo rt RST with small partition.
Options: Disabled (Default) / Enabled

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Active Memory Threshold
This item allows system to try to support RST when partition s ize > Active Page
Threshold size in MB. When set to zero, the item will be in AUTO mode and check
if partition size is enough at S3 entry.
Options: 0 (Default)
PCH-FW Configuration
MDES BIOS Status Code
This item enables/disab les MDES BIOS status code..
Options: Disabled (Default) / Enabled

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Firmware updated Configuration
Me FW Image Re-Flash
This item enables or disables Me FW image Re-Flash function.
Options: Disabled (Default) / Enabled
AMT Configuration
Intel AMT
This item enables or disables Intel(R) active management technology BIOS
extension. Note: iAMT H/W is always enable. This option just controls the BIOS
extension execution. If enabled, this requires additional firmware in the SPI device..
Options: Enabled (Default) / Disabled

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BIOS Hotkey Pressed
OEMFLag Bit 1: enable/ disable BIOS hotkey press.
Options: Disabled (Default) / Enabled
MEBx Selection Screen
OEMFLag Bit 2: enable/ disable MEBx hotkey s election screen.
Options: Disabled (Default) / Enabled
Hide Un-Configure ME Configuration
OEMFLag Bit 6: Hide In-Configure MW without password confirmation prompt..
Options: Disabled (Default) / Enabled
MEBx Debug Message Output
OEMFLag Bit 14: enable/ disable MEBx debug message output.
Options: Disabled (Default) / Enabled
Un-Con figure ME
OEMFLag Bit 15: Un-Configure ME without password..
Options: Disabled (Default) / Enabled
Amt Wait Timer
This item s ets timer to wait before s ending ASF_GET_BOOT_OPTIONS..
Options: 0 (Default)
Disable ME
This item sets ME to soft temporary disabled.
Options: Disabled (Default) / Enabled
ASF
This item enables/ disables alerts specification format.
Options: Enable (Default) /Disabled

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Activate Remote Assistance Process
This item triggers CIRA boot/.
Options: Disable (Default) / Enabled
USB Configure
This item enables/ disables USB configure function.
Options: Enable (Default) / Disabled
PET Process
User can enables / disables PET events process to receive PET events or not..
Options: Enable (Default) / Disabled
WatchDog
This item enables/ disables watchdog timer..
Options: Disabled (Default) / Enabled
OS Timer
This item sets OS watchdog timer.
BIOS Timer
This item sets BIOSS watchdog timer.

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USB Configuration
Legacy USB Support
This item determines if the BIOS should provide legacy support for USB devices
like the keyboard, mouse, and USB drive. This is a useful feature when using such
USB devices with operating systems that do not natively support USB (e.g.
Microsoft DOS or Windows NT).
Options: Enabled (Default) / Disabled / Auto
USB3.0 Support
This item enables or disables USB3.0 (XHCI) Controller support.
Options: Enabled (Default) / Disabled
XHCI Hand-Off
This is a workaround for OSes without XHCI hand-off support. The XHCI
ownership change should be claimed by XHCI driver.
Options: Enabled (Default) / Disabled
EHCI Hand-Off
This is a workaround for OSes without EHCI hand-off support. The EHCI ownership
change should be claimed by EHCI driver.
Options: Disabled (Default) / Enabled
Port 60/64 Emulation
This items enables I/O port 60h/64h emulation support. This should be enabled for
the co mplete USB keyboard legacy s upport fo r no n-US B aware OSes.
Options: Enabled (Default) / Disabled

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USB transfer time-out
The time-out value for Control, Bulk, and Interrupt transfers.
Options: 20 sec (Default) / 1 sec / 5 sec / 10 sec
Device reset time-out
The item sets USB mass storage device Start Unit command time-out.
Options: 20 sec (Default) / 10 sec / 30 sec / 40 sec
Device power-up delay
“Auto” uses default value: for a Root port it is 100ms, for a Hub port the delay is
taken from Hub descriptor.
Options: Auto (Default) / Manual
Device power-up delay in seconds
Delay range is 1 ~ 40 seconds, in one second increments.
Options: 5 (Default)
SMART FAN Control
CPU Smart FAN
This item allows you to control the CPU Smart Fan function.
Options: Disabled (Default) / Auto
CPU FAN Calibrate
Press [ENTER] to calibrate CPU FAN.

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Control Mode
This item provides several operation modes of the fan.
Options: Quiet / Aggressive / Manual
Fan Ctrl OFF(℃)
When CPU temperature is lower than this value, the CPU fan will keep lo west RP M.
Optio ns: 10 (℃) (default)
Fan Ctrl On(℃)
When CPU temperature is higher than this value, the CPU fan controller will turn on.
Optio ns: 20 (℃) (Default)
Fan Ctrl Start Value
This item sets CPU FAN Start Speed Value.
Options: 50 (Default)
Fan Ctrl Sensitive
The bigger the numeral is, the higher the FAN speed is.
Options: 30 (Default)
Super IO Configuration