No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK COMPUTER INC. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
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EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY
DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO
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Offer to Provide Source Code of Certain Software
This product contains copyrighted software that is licensed under the General Public License (“GPL”),
under the Lesser General Public License Version (“LGPL”) and/or other Free Open Source Software
Licenses. Such software in this product is distributed without any warranty to the extent permitted by the
applicable law. Copies of these licenses are included in this product.
Where the applicable license entitles you to the source code of such software and/or other additional data,
you may obtain it for a period of three years after our last shipment of the product, either
(1) for free by downloading it from http://support.asus.com/download
or
(2) for the cost of reproduction and shipment, which is dependent on the preferred carrier and the location
where you want to have it shipped to, by sending a request to:
ASUSTeK Computer Inc.
Legal Compliance Dept.
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In your request please provide the name, model number and version, as stated in the About Box of the
product for which you wish to obtain the corresponding source code and your contact details so that we
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The source code will be distributed WITHOUT ANY WARRANTY and licensed under the same license as
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This offer is valid to anyone in receipt of this information.
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the product and describing the problem (please DO NOT send large attachments such as source code
archives, etc. to this email address).
ii
Page 3
Contents
Safety information ...................................................................................................... iv
About this guide ......................................................................................................... iv
Package contents ....................................................................................................... vi
Z97-A/USB 3.1 specifications summary ................................................................... vi
Chapter 1: Product Introduction
1.1 Before you proceed ...................................................................................1-1
ASUS contact information ...................................................................................... A-4
iii
Page 4
Safety information
Electrical safety
• To prevent electrical shock hazard, disconnect the power cable from the electrical outlet
before relocating the system.
• When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
• Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
• Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
• Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.
• If the power supply is broken, do not try to x it by yourself. Contact a qualied service
technician or your retailer.
Operation safety
• Before installing the motherboard and adding components, carefully read all the manuals
that came with the package.
• Before using the product, ensure all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
• To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
• Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may be exposed to moisture.
• Place the product on a stable surface.
• If you encounter technical problems with the product, contact a qualied service
technician or your retailer.
About this guide
This user guide contains the information you need when installing and conguring the
motherboard.
How this guide is organized
This guide contains the following parts:
•Chapter1:Productintroduction
This chapter describes the features of the motherboard and the new technology it
supports. It includes descriptions of the switches, jumpers, and connectors on the
motherboard.
•Chapter2:BIOSinformation
This chapter discusses changing system settings through the BIOS Setup menus.
Detailed descriptions for the BIOS parameters are also provided.
iv
Page 5
Where to find more information
Refer to the following sources for additional information and for product and software
updates.
1. ASUS websites
The ASUS website provides updated information on ASUS hardware and software
products. Refer to the ASUS contact information.
2. Optional documentation
Your product package may include optional documentation, such as warranty yers,
that may have been added by your dealer. These documents are not part of the
standard package.
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when
completing a task.
CAUTION: Information to prevent damage to the components when
completing a task
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
Typography
Bold text
Italics
<Key>Keys enclosed in the less-than and greater-than sign
<Key1> + <Key2> + <Key3>If you must press two or more keys simultaneously, the key
Indicates a menu or an item to select.
Used to emphasize a word or a phrase.
means that you must press the enclosed key.
Example: <Enter> means that you must press the Enter or
Return key.
names are linked with a plus sign (+).
v
Page 6
Package contents
Check your motherboard package for the following items:
Motherboard
Cables
Accessories
Application DVD
Documentation
If any of the above items is damaged or missing, contact your retailer.
ASUS Z97-A/USB 3.1 Motherboard
3 x Serial ATA 6.0 Gb/s cables
1 x ASUS SLI bridge connector
2-in-1 Q-connector
Support DVD
User Guide
Z97-A/USB 3.1 specifications summary
LGA1150 socket for the 4th Generation and the New 4th Generation Intel
®
Core™ i5/ Intel® Core™ i3, Pentium® and Celeron® processors
i7/Intel
CPU
Chipset
Memory
Expansion
slots
VGA
Supports 22nm CPU
®
Supports Intel
* The Intel® Turbo Boost Technology 2.0 support depends on the CPU types.
and ASUS DRAM SPD (Serial Presence Detect) memory information
WfM 2.0, DMI 2.7, WOL by PME, PXE
Drivers
ASUS utilities
EZ Update
Anti-virus software (OEM version)
®
8.1/Windows® 8
Windows
®
7
Windows
ATX form factor: 12 in. x 9.6 in. (30.5 cm x 22.4 cm)
Specications are subject to change without notice.
x
Page 11
Chapter 1: Product Introduction
Product introduction
1
1.1 Before you proceed
Take note of the following precautions before you install motherboard components or change
any motherboard settings.
• Unplug the power cord from the wall socket before touching any component.
• Before handling components, use a grounded wrist strap or touch a safely grounded
object or a metal object, such as the power supply case, to avoid damaging them due
to static electricity.
• Hold components by the edges to avoid touching the ICs on them.
• Whenever you uninstall any component, place it on a grounded antistatic pad or in the
bag that came with the component.
• Before you install or remove any component, ensure that the ATX power supply is
switched off or the power cord is detached from the power supply. Failure to do so
may cause severe damage to the motherboard, peripherals, or components.
1.2 Motherboard overview
Before you install the motherboard, study the conguration of your chassis to ensure that the
motherboard ts.
Unplug the power cord before installing or removing the motherboard. Failure to do so can
cause you physical injury and damage to motherboard components.
1.2.1 Placement direction
When installing the motherboard, place it into the chassis in the correct orientation. The edge
with external ports goes to the rear part of the chassis.
1.2.2 Screw holes
Place nine screws into the holes indicated by circles to secure the motherboard to the
chassis.
Do not overtighten the screws! Doing so can damage the motherboard.
ASUS Z97-A/USB 3.1
1-1
Page 12
Place this side towards the
rear of the chassis
1.2.3 Motherboard layout
1-2
Chapter 1: Product introduction
Page 13
1.2.4 Layout contents
Connectors/Jumpers/Slots/LEDPage
1. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V)
2.Intel
3.CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CPU_OPT;
4.DDR3 DIMM slots1-7
5.CPU Over Voltage jumper (3-pin CPU_OV) 1-24
6.MemOK! button
7.EZ XMP switch 1-42
8.USB 3.0 connector (20-1 pin USB3_12)1-34
9.Intel
10. EPU switch1-39
11. TPU switch1-41
12. DirectKey connector (2-pin DRCT) 1-31
13. System panel connector (20-8 pin PANEL) 1-33
14. USB 2.0 connectors (10-1 pin USB910, USB1112, USB1314) 1-32
15. T Sensor connector (2-pin T_SENSOR1)1-35
16. Clear RTC RAM (3-pin CLRTC)1-23
17. TPM connector (20-1 pin TPM)1-32
18. Power-on button1-42
19. Thunderbolt header (5-pin TB_HEADER)1-35
20. Serial port connector (10-1 pin COM)1-27
21. Front panel audio connector (10-1 pin AAFP)1-30
22. Digital audio connector (4-1 pin SPDIF_OUT)1-30
23. M.2 Socket 31-31
®
LGA1150 CPU socket 1-4
CHA_FAN1, CHA_FAN2, CHA_FAN3, CHA_FAN4)
®
Z97 Serial ATA 6.0 Gb/s connector (7-pin SATA6G_1, SATA6G_2,
SATA6G_34, SATA6G_56, SATA Express
1-29
1-28
1-40
1-27
ASUS Z97-A/USB 3.1
1-3
Page 14
1.3 Central Processing Unit (CPU)
The motherboard comes with a surface mount LGA1150 socket designed for the 4th
Generation and New 4th Generation Intel® Core™ i7 / Intel® Core™ i5 / Intel® Core™ i3,
Pentium®, and Celeron® processors.
Ensure that you install the correct CPU designed for LGA1150 socket only. DO NOT install
a CPU designed for LGA1155 and LGA1156 sockets on the LGA1150 socket.
• Ensure that all power cables are unplugged before installing the CPU.
• Upon purchase of the motherboard, ensure that the PnP cap is on the socket and
the socket contacts are not bent. Contact your retailer immediately if the PnP cap
is missing, or if you see any damage to the PnP cap/socket contacts/motherboard
components. ASUS will shoulder the cost of repair only if the damage is shipment/
transit-related.
• Keep the cap after installing the motherboard. ASUS will process Return Merchandise
Authorization (RMA) requests only if the motherboard comes with the cap on the
LGA1150 socket.
• The product warranty does not cover damage to the socket contacts resulting from
incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the PnP
cap.
1-4
Unplug all power cables before installing the CPU.
Chapter 1: Product introduction
Page 15
1.3.1 Installing the CPU
ASUS Z97-A/USB 3.1
1-5
Page 16
1.3.2 CPU heatsink and fan assembly installation
Apply the Thermal Interface Material
to the CPU heatsink and CPU
before you install the heatsink and
fan, if necessary.
To install the CPU heatsink and fan assembly
1-6
Chapter 1: Product introduction
Page 17
To uninstall the CPU heatsink and fan assembly
1.4 System memory
1.4.1 Overview
This motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Module
(DIMM) sockets. A DDR3 module is notched differently from a DDR or DDR2 module. DO
NOT install a DDR or DDR2 memory module to the DDR3 slot.
According to Intel® CPU spec, DIMM voltage below 1.65 V is recommended to protect the
CPU.
ASUS Z97-A/USB 3.1
1-7
Page 18
Recommended memory configurations
1.4.2 Memory configurations
You may install 1 GB, 2 GB, 4 GB, and 8 GB unbuffered non-ECC DDR3 DIMMs into the
DIMM sockets. You can refer to the recommended memory population below.
• You may install varying memory sizes in Channel A and Channel B. The system
maps the total size of the lower-sized channel for the dual-channel conguration. Any
excess memory from the higher-sized channel is then mapped for single-channel
operation.
• Always install DIMMs with the same CAS latency. For optimal compatibility, we
recommend that you install memory modules of the same version or date code (D/C)
from the same vendor. Check with the retailer to get the correct memory modules.
®
• Due to the memory address limitation on 32-bit Windows
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you do any of the
following:
- Use a maximum of 3 GB system memory if you are using a 32-bit Windows
®
- Install a 64-bit Windows
motherboard.
• This motherboard does not support DIMMs made up of 512 Mb (64 MB) chips or less.
OS if you want to install 4GB or more on the
OS, when you install 4GB
®
OS.
1-8
• The default memory operation frequency is dependent on its Serial Presence Detect
(SPD), which is the standard way of accessing information from a memory module.
Under the default state, some memory modules for overclocking may operate at a
lower frequency than the vendor-marked value. To operate at the vendor-marked
or at a higher frequency, refer to section 2.5 Ai Tweaker menu for manual memory
frequency adjustment.
• Memory modules with memory frequency higher than 2133MHz and their
corresponding timing or the loaded XMP prole is not the JEDEC memory standard.
The stability and compatibility of the memory modules depend on the CPU’s
capabilities and other installed devices.
• For system stability, use a more efcient memory cooling system to support a full
memory load (4 DIMMs).
• Visit the ASUS website at: www.asus.com for the latest QVL.
Silicon Power SP001GBLTU133S021GB SSS-POWER 10YT3E59-•••
Silicon Power SP002GBLTU133V022GB SSS-POWER 20YT3NG9-9-9-24 -•••
Silicon Power SP004GBLTU133V024GB DSS-POWER 20YT3NG9-9-9-24 -•••
UMAX84E44G93UM-13BPSYW 4GBSSUMAXU2S96D3
UMAX84E48G93UM-13BPSYW 8GBDSUMAXU2S96D3
DS----•••
(4x4GB)
Xtreme
C2S46D3
0-D313
3BU-15
1AG22Fe
1AG32Cf
0TP-13
0TP-13
--•••
9-••
9-•••
9-•••
1333-9-
9-9-24
1333-9-
9-9-24
support (Optional)
124
-•••
-•••
1.4.3 DIMM installation
ASUS Z97-A/USB 3.1
1-19
Page 30
To remove a DIMM
1.5 Expansion slots
In the future, you may need to install expansion cards. The following sub-sections describe
the slots and the expansion cards that they support.
Unplug the power cord before adding or removing expansion cards. Failure to do so may
cause you physical injury and damage motherboard components.
1.5.1 Installing an expansion card
To install an expansion card:
1. Before installing the expansion card, read the documentation that came with it and
make the necessary hardware settings for the card.
2. Remove the system unit cover (if your motherboard is already installed in a chassis).
3. Remove the bracket opposite the slot that you intend to use. Keep the screw for later
use.
4. Align the card connector with the slot and press rmly until the card is completely
seated on the slot.
5. Secure the card to the chassis with the screw you removed earlier.
6. Replace the system cover.
1-20
Chapter 1: Product introduction
Page 31
1.5.2 Configuring an expansion card
After installing the expansion card, congure it by adjusting the software settings:
1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for
information on BIOS setup.
2. Assign an IRQ to the card.
3. Install the software drivers for the expansion card.
When using PCI cards on shared slots, ensure that the drivers support “Share IRQ” or that
the cards do not need IRQ assignments. Otherwise, conicts arise between the two PCI
groups, making the system unstable and the card inoperable.
1.5.3 PCI slots
The PCI slot supports cards such as a LAN card, SCSI card, USB card, and other cards that
comply with PCI specications.
1.5.4 PCI Express 2.0 x1 slots
This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that
comply with the PCI Express specications.
1.5.5 PCI Express 3.0 / 2.0 x16 slots
This motherboard supports PCI Express x16 network cards, SCSI cards, and other cards that
comply with the PCI Express specications.
ASUS Z97-A/USB 3.1
Slot No. Expansion slot
PCIe 2.0 x1_1 slot
PCIe 3.0/2.0 x16_1 slot
PCI_1 slot
PCIe 2.0 x1_2 slot
PCIe 3.0/2.0 x16_2 slot
PCI_2 slot
PCIe 2.0 x16_3 slot
1-21
Page 32
VGA configuration
PCI Express 3.0 operating mode
PCIe 3.0/2.0 x16_1PCIe 3.0/2.0 x16_2
Single VGA/PCIe card
Dual VGA/PCIe cardx8x8
• We recommend that you provide sufcient power when running CrossFireX™ or SLI™
mode.
• Connect a chassis fan to the motherboard connector labeled CHA_FAN1-4 when
using multiple graphics cards for better thermal environment.
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.
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 reenter 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 thae 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.
• Due to chipset behavior, AC power off is required to enable C.P.R. function. You must
turn off and on the power supply or unplug and plug the power cord before rebooting
the system.
ASUS Z97-A/USB 3.1
1-23
Page 34
2. CPU Over Voltage jumper (3-pin CPU_OV)
The CPU Over Voltage jumper allows you to set a higher CPU voltage for a exible
overclocking system, depending on the type of the installed CPU. To gain more CPU
voltage setting, insert the jumper to pins 2-3. To go back to its default CPU voltage
setting, insert the jumper to pins 1-2.
1-24
Chapter 1: Product introduction
Page 35
1.7 Connectors
1.7.1 Rear panel connectors
Rear panel connectors
1.DisplayPort7.DVI-D port
2.VGA port8.USB 3.0 ports 56
3.USB 3.1 ports E12
(Support USB 3.1 Boost)
4.PS/2 keyboard/mouse port10. Optical S/PDIF Out port
5.LAN port*11. Audio I/O ports**
6.HDMI port
* and **: Refer to the tables on the next page for LAN port LEDs and audio port definitions.
ASUS Z97-A/USB 3.1
9.USB 3.0 ports 34
1-25
Page 36
• The plugged USB 3.0 device may run on xHCI or EHCI mode, depending on the
operating system’s setting.
• USB 3.0 devices can only be used for data storage.
• We strongly recommend that you connect USB 3.0 devices to USB 3.0 ports for faster
and better performance from your USB 3.0 devices.
®
• Due to the design of the Intel
USB 2.0 and USB 3.0 ports are controlled by the xHCI controller. Some legacy USB
devices must update their rmware for better compatibility.
• Multi-VGA output supports up to three displays under Windows
displays under BIOS, and one display under DOS.
• Intel display architecture design supports the following maximum supported pixel
clocks (Pixel Clock = H total x V Total x Frame Rate (Screen refresh rate)):
- DVI port: 165 MHz
- DisplayPort: 533 MHz
- VGA port: 180 MHz
- HDMI port: 300 MHz
9 series chipset, all USB devices connected to the
* LAN ports LED indications
Activity Link LEDSpeed LED
StatusDescriptionStatus Description
Off
Orange
Orange (Blinking)
Orange (Blinking
then steady)
No linkOff10 Mbps connection
LinkedOrange 100 Mbps connection
Data activityGreen1 Gbps connection
Ready to wake up
from S5 mode
®
OS environment, two
ACT/LINK
LED
LAN port
SPEED
LED
**Audio 2, 4, 6, or 8-channel configuration
Port
Headset
2-channel
4-channel6-channel8-channel
Light BlueLine InLine InLine InSide Speaker Out
LimeLine OutFront Speaker OutFront Speaker OutFront Speaker Out
PinkMic InMic InMic InMic In
Orange––Center/SubwooferCenter/Subwoofer
Black–Rear Speaker OutRear Speaker OutRear Speaker Out
1-26
Chapter 1: Product introduction
Page 37
1.7.2 Internal connectors
1. Serial port connector (10-1 pin COM)
This connector is for a serial (COM) port. Connect the serial port module cable to this
connector, then install the module to a slot opening at the back of the system chassis.
The COM module is purchased separately.
2. Intel® Z97 Serial ATA 6.0 Gb/s connectors (7-pin SATA6G_1, SATA6G_2, SATA6G_34, SATA6G_56, SATA Express)
This connector connects to Serial ATA 6.0 Gb/s hard disk drives via Serial ATA 6.0
Gb/s signal cables.
When using hot-plug and NCQ, set the SATA Mode Selection item in the BIOS to [AHCI].
See section 2.6.3 PCH Storage Configuration for details.
ASUS Z97-A/USB 3.1
1-27
Page 38
3. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CPU_OPT; CHA_FAN1,
CHA_FAN2, CHA_FAN3, CHA_FAN4)
Connect the fan cables to the fan connectors on the motherboard, ensuring that the
black wire of each cable matches the ground pin of the connector.
• DO NOT forget to connect the fan cables to the fan connectors. Insufcient air ow
inside the system may damage the motherboard components. These are not jumpers!
Do not place jumper caps on the fan connectors! The CPU_FAN connector supports a
CPU fan of maximum 1 A (12 W) fan power.
• Ensure that the CPU fan cable is securely installed to the CPU fan connector.
1-28
• The CPU_FAN connector supports the CPU fan of maximum 1A (12 W) fan power.
• The CPU_FAN connector and CHA_FAN connectors support the ASUS FAN Xpert 3
feature.
Chapter 1: Product introduction
Page 39
4. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V)
These connectors are for ATX power supply plugs. The power supply plugs are
designed to t these connectors in only one orientation. Find the proper orientation and
push down rmly until the connectors completely t.
• For a fully congured system, we recommend that you use a power supply unit
(PSU) that complies with ATX 12 V Specication 2.0 (or later version) and provides a
minimum power of 350 W.
• DO NOT forget to connect the 4-pin/8-pin ATX +12V power plug. Otherwise, the
system will not boot up.
• We recommend that you use a PSU with higher power output when conguring a
system with more power-consuming devices or when you intend to install additional
devices. The system may become unstable or may not boot up if the power is
inadequate.
• If you want to use two or more high-end PCI Express x16 cards, use a PSU with
1000W power or above to ensure the system stability.
• If you are uncertain about the minimum power supply requirement for your system,
refer to the Recommended Power Supply Wattage Calculator at http://support.asus.
com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.
ASUS Z97-A/USB 3.1
1-29
Page 40
5. Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module that supports
either HD Audio or legacy AC`97 audio standard. Connect one end of the front panel
audio I/O module cable to this connector.
• We recommend that you connect a high-denition front panel audio module to this
connector to avail of the motherboard’s high-denition audio capability.
• If you want to connect a high-denition front panel audio module to this connector,
set the Front Panel Type item in the BIOS setup to [HD]. If you want to connect an
AC’97 front panel audio module to this connector, set the item to [AC97]. By default,
this connector is set to [HD]. See section 2.6.7 Onboard Devices Configuration for
details.
6. Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port. Connect
the S/PDIF Out module cable to this connector, then install the module to a slot
opening at the back of the system chassis.
1-30
The S/PDIF module is purchased separately.
Chapter 1: Product introduction
Page 41
7. DirectKey connector (2-pin DRCT)
This connector is for the chassis-mounted button that supports the DirectKey function.
Connect the button cable that supports DirectKey, from the chassis to this connector
on the motherboard.
Ensure that your chassis comes with the extra button cable that supports the DirectKey
feature. Refer to the technical documentation that came with the chassis for details.
8. M.2 socket 3
This socket allows you to install an M.2 (NGFF) SSD module.
• This socket supports M Key and type 2260/2280 storage devices.
• The M.2 (NGFF) SSD module is purchased separately.
• The M.2 socket 3 is set as disabled. Refer to section 2.6.7 Onboard Devices Configuration and set the item PCI Express Slot and M.2 Bandwidth to [M.2 Mode] to
enable this function.
ASUS Z97-A/USB 3.1
1-31
Page 42
9. USB 2.0 connectors (10-1 pin USB910, USB1112, USB1314)
These connectors are for USB 2.0 ports. Connect the USB module cable to any of
these connectors, then install the module to a slot opening at the back of the system
chassis. These USB connectors comply with USB 2.0 specications and supports up to
480 Mb/s connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
The USB 2.0 module is purchased separately.
These connectors are based on xHCI specication. We recommend you to install the
related driver to fully use the USB 2.0 ports under Windows® 7.
10. TPM connector (20-1 pin TPM)
This connector supports a Trusted Platform Module (TPM) system, which securely
store keys, digital certicates, passwords and data. A TPM system also helps enhance
the network security, protects digital identities, and ensures platform integrity.
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11. System panel connector (10-1 pin PANEL)
This connector supports several chassis-mounted functions.
•SystempowerLED(2-pinPWR_LED)
This 2-pin connector is for the system power LED. Connect the chassis power LED
cable to this connector. The system power LED lights up when you turn on the system
power, and blinks when the system is in sleep mode.
•HarddiskdriveactivityLED(2-pinHDD_LED)
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable
to this connector. The HDD LED lights up or ashes when data is read from or written
to the HDD.
•Systemwarningspeaker(4-pinSPEAKER)
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
•ATXpowerbutton/soft-offbutton(2-pinPWR_SW)
This connector is for the system power button. Pressing the power button turns the
system on or puts the system in sleep or soft-off mode depending on the operating
system settings. Pressing the power switch for more than four seconds while the
system is ON turns the system OFF.
•Resetbutton(2-pinRESET)
This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.
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12. USB 3.0 connector (20-1 pin USB3_12)
This connector allows you to connect a USB 3.0 module for additional USB 3.0 front
or rear panel ports. With an installed USB 3.0 module, you can enjoy all the benets of
USB 3.0 including faster data transfer speeds of up to 5 Gb/s, faster charging time for
USB-chargeable devices, optimized power efciency, and backward compatibility with
USB 2.0.
The USB 3.0 module is purchased separately.
• These connectors are based on xHCI specication. We recommend you to install the
related driver to fully use the USB 3.0 ports under Windows® 7.
• The plugged USB 3.0 device may run on xHCI or EHCI mode depending on the
operating system’s setting.
• These USB 3.0 ports support native UASP transfer standard in Windows
Windows® 8.1 and Turbo Mode when using USB 3.0 Boost feature.
®
8 /
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13. Thunderbolt header (5-pin TB_HEADER)
This connector is for the add-on Thunderbolt I/O card that supports Intel’s Thunderbolt
Technology, allowing you to connect up to six Thunderbolt-enabled devices and a
DisplayPort-enabled display in a daisy-chain conguration.
The add-on Thunderbolt I/O card and Thunderbolt cables are purchased separately.
14. T_Sensor connector (2-pin T_SENSOR1)
This connector is for the thermistor cable that allows you to monitor the temperature of
your motherboard’s critical components and connected devices.
The thermistor cable is purchased separately.
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1.8 Onboard LEDs
1. Standby Power LED
The motherboard comes with a standby power LED that lights up to indicate that the
system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should
shut down the system and unplug the power cable before removing or plugging any
motherboard components. The illustration below shows the location of the onboard
LED.
2. POST State LEDs
The POST State LEDs provide the status of these key components during POST
(Power-On-Self Test): CPU, memory modules, VGA card, and hard disk drives. If an
error is found, the critical component’s LED stays lit up until the problem is solved.
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3. TPU LEDs (TPU_LED)
The TPU LEDs light up when you set the TPU switch to TPU_I mode or TPU_II mode.
4. EPU LED (OLED2)
The EPU LED lights up when the EPU switch is enabled.
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5. EZ XMP LED (XLED1)
This LED lights up when you enable the EZ XMP switch.
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1.9 Onboard buttons and switches
Onboard buttons and switches allow you to ne-tune performance when working on a bare or
open-case system. This is ideal for overclockers and gamers who continually change settings
to enhance system performance.
1. EPU switch
Enable this switch to automatically detect the current PC loadings and intelligently
moderate the power consumption.
Enable this switch when the system is powered off.
• The EPU LED (OLED2) near the EPU switch lights up when the EPU switch is
enabled. Refer to section 1.8 Onboard LEDs for the exact location of the EPU LED.
®
• If you enable this switch under Windows
activated after the next system bootup.
• You may change the EPU settings in the software application or BIOS setup program
and enable the EPU function at the same time. However, the system will use the last
setting you have made.
OS environment, the EPU function will be
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2. MemOK! button
Installing DIMMs that are not compatible with the motherboard may cause system
boot failure, and the DRAM_LED near the MemOK! button lights continuously. Press
and hold the MemOK! button until the DRAM_LED starts blinking to begin automatic
memory compatibility tuning for successful boot.
• Refer to section 1.8 Onboard LEDs for the exact location of the DRAM_LED.
• The DRAM_LED also lights up when the DIMM is not properly installed. Turn off the
system and reinstall the DIMM before using the MemOK! function.
®
• The MemOK! button does not function under Windows
• During the tuning process, the system loads and tests failsafe memory settings. It
takes about 30 seconds for the system to test one set of failsafe settings. If the test
fails, the system reboots and test the next set of failsafe settings. The blinking speed
of the DRAM_LED increases, indicating different test processes.
• Due to memory tuning requirement, the system automatically reboots when each
timing set is tested. If the installed DIMMs still fail to boot after the whole tuning
process, the DRAM_LED lights continuously. Replace the DIMMs with ones
recommended in the Memory QVL (Qualied Vendors Lists) in this user manual or at
www.asus.com.
• If you turn off the computer and replace DIMMs during the tuning process, the system
continues memory tuning after turning on the computer. To stop memory tuning, turn
off the computer and unplug the power cord for about 5–10 seconds.
• If your system fails to boot up due to BIOS overclocking, press the MemOK! button
to boot and load the BIOS default settings. A message will appear during POST
reminding you that the BIOS has been restored to its default settings.
• We recommend that you download and update to the latest BIOS version from
www.asus.com after using the MemOK! function.
OS environment.
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3. TPU switch
With its two-level adjustment functions, the TPU allows you to automatically adjusts the
CPU ratio and clock speed for an optimal system performance.
• Enable this switch when the system is powered off.
• When the TPU switch is set to Enabled (TPU_I: CPU Ratio Boost), the system
automatically adjusts the CPU ratio for an enhanced performance.
• When the TPU switch is set to Enabled (TPU_II: CPU BCLK and Ratio Boost), the
system automatically adjusts the base clock rate (BLCK) and the CPU ratio for a more
enhanced performance.
• The TPU LEDs (TPU_LED) near the TPU switch light up when you set the TPU switch
to TPU_I mode or TPU_II mode. Refer to section 1.8 Onboard LEDs for the exact
location of the TPU LEDs.
®
• If you enable this switch under Windows
activated after the next system bootup.
• You may use the 5-Way Optimization and TPU feature in the AI Suite 3 application,
adjust the BIOS setup program or enable the TPU switch at the same time. However,
the system will use the last setting you have made.
OS environment, the TPU function will be
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4. Power-on button
The motherboard comes with a power-on button that allows you to power up or wake
up the system. The button also lights up when the system is plugged to a power source
indicating that you should shut down the system and unplug the power cable before
removing or installing any motherboard component.
5. EZ XMP switch
Enable this switch to overclock the installed DIMMs, allowing you to enhance the
DIMM’s speed and performance.
1-42
The EZ XMP LED (XLED1) lights up when you enable the EZ XMP switch. For the location
of the EZ XMP LED, refer to section 1.8 Onboard LEDs.
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1.10 Software support
1.10.1 Installing an operating system
This motherboard supports Windows® 7 (32bit/64bit) and Windows® 8 (32bit/64bit) Operating
Systems (OS). Always install the latest OS version and corresponding updates to maximize
the features of your hardware.
Motherboard settings and hardware options vary. Refer to your OS documentation for
detailed information.
1.10.2 Support DVD information
The Support DVD that comes with the motherboard package contains the drivers, software
applications, and utilities that you can install to avail all motherboard features.
The contents of the Support DVD are subject to change at any time without notice. Visit the
ASUS website at www.asus.com for updates.
Running the support DVD
Place the Support DVD into the optical drive. If Autorun is enabled in your computer, the DVD
automatically displays the lists of the unique features of your ASUS motherboard. Click the
Drivers, Utilities, AHCI/RAID Driver, Manual, Contact, or Specials tabs to display their
respective menus.
The following screen is for reference only.
Click to install all items
ASUS Z97-A/USB 3.1
Click an icon to display
Support DVD/motherboard
information
Click an item to install
If Autorun is NOT enabled in your computer, browse the contents of the Support DVD to
locate the le ASSETUP.EXE from the BIN folder. Double-click ASSETUP.EXE to run the
DVD.
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Chapter 2: BIOS information
BIOS information
2
2.1 Managing and updating your BIOS
The ASUS website publishes the latest BIOS versions to provide enhancements on system
stability, compatibility,and performance. However, BIOS updating is potentially risky. If
there is no problem using the current version of BIOS, DO NOT manually update the BIOS.
Inappropriate BIOS updating may result to system’s failure to boot. Carefully follow the
instructions in this chapter to update your BIOS when necessary.
Visit http://www.asus.com to download the latest BIOS le for this motherboard.
The following utilities allow you to manage and update the motherboard BIOS setup program.
®
1. EZ Update: Updates the BIOS in Windows
2. ASUS EZ Flash 2: Updates the BIOS using a USB ash drive.
3. ASUS CrashFree BIOS 3: Restores the BIOS using the motherboard support DVD or
a USB ash drive when the BIOS le fails or gets corrupted.
4. ASUS BIOS Updater: Updates the BIOS in DOS environment using the motherboard
support DVD and a USB ash disk drive.
Save a copy of the original motherboard BIOS le to a USB ash disk in case you need
to restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS
Update utility.
environment.
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2.1.1 EZ Update
EZ Update is a utility that allows you to automatically update your motherboard’s softwares,
drivers, and the BIOS version easily. With this utlity, you can also manually update the saved
BIOS and select a boot logo when the system goes into POST.
Click or tap to automatically update your
motherboard driver, software and firmware
Click or tap to search and
select the BIOS file
EZ Update requires an Internet connection either through a network or an ISP (Internet
Service Provider).
Click or tap to select a
boot logo
Click or tap to update
the BIOS
2.1.2 ASUS EZ Flash 2
The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based
utility.
Before you start using this utility, download the latest BIOS le from the ASUS website at
http://www.asus.com.
To update the BIOS using EZ Flash 2:
1. Insert the USB ash disk that contains the latest BIOS le to the USB port.
2. Enter the Advanced Mode of the BIOS setup program. Go to the Tool menu to select
ASUS EZ Flash Utility and press <Enter>.
3. Press <Tab> to switch to the Drive eld.
4. Press the Up/Down arrow keys to nd the USB ash disk that contains the latest BIOS
then press <Enter>.
5. Press <Tab> to switch to the Folder Info eld.
6. Press the Up/Down arrow keys to nd the BIOS le then press <Enter> to perform the
BIOS update process.
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7. Reboot the system when the update process is done.
• This function supports USB ash disks formatted using FAT32 or FAT16 on a single
partition only.
• Ensure to load the BIOS default settings to ensure system compatibility and stability.
Select the Load Optimized Defaults item under the Exit menu.
• DO NOT shut down or reset the system while updating the BIOS to prevent system
boot failure!
2.1.3 ASUS CrashFree BIOS 3 utility
The ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to restore the BIOS le
when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS
le using the motherboard support DVD or a USB ash drive that contains the updated BIOS
le.
• Before using this utility, rename the BIOS le in the removable device into
Z97AU31.CAP.
• Download the latest BIOS le from the ASUS website at http://www.asus.com.
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Recovering the BIOS
To recover the BIOS:
1. Turn on the system.
2. Insert the support DVD into the optical drive or the USB ash drive that contains the
BIOS le to the USB port.
The utility automatically checks the devices for the BIOS le. When found, the utility reads
the BIOS le and automatically enters ASUS EZ Flash 2 utility. The system requires you to
enter BIOS Setup to recover BIOS settings.
DO NOT shut down or reset the system while updating the BIOS! Doing so can cause
system boot failure!
3. Press <F5> to load default BIOS values (Highly recommended).
2.1.4 ASUS BIOS Updater
ASUS BIOS Updater allows you to update the BIOS in DOS environment.
The screen captures used in this section are for reference only and may not be exactly the
same as actually shown on your computer screen.
Before updating BIOS
• Prepare the motherboard support DVD and a USB ash drive.
• Download the latest BIOS le and BIOS Updater from http://support.asus.com and
save them in your USB ash drive.
NTFS is not supported under DOS environment. Ensure that your USB ash drive is in
single partition and in FAT32/16 format.
• Turn off the computer.
• Ensure that your computer has a DVD optical drive.
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Booting the system in DOS environment
device automatically. boot:
To boot the system in DOS:
1. Insert the USB ash drive with the latest BIOS le and BIOS Updater to the USB port.
2. Boot your computer then press <F8> to launch the select boot device screen.
3. When the select boot device screen appears, insert the Support DVD into the optical
drive then select the optical drive as the boot device.
Please select boot device:
E1: ASUS DVD-E818A6T (4069MB)
USB DISK 2.0 (3824MB)
UEFI: (FAT) USB DISK 2.0 (3824MB)
Enter Setup
and to move selection
ENTER to select boot device
ESC to boot using defaults
4. When the booting message appears, press <Enter> within ve (5) seconds to enter
FreeDOS prompt.
ISOLINUX 3.20 2006-08-26 Copyright (C) 1994-2005 H. Peter Anvin
A Bootable DVD/CD is detected. Press ENTER to boot from the DVD/CD.
If no key is pressed within 5 seconds, the system will boot next priority
5. On the FreeDOS prompt, type d: then press <Enter> to switch the disk from Drive C
(optical drive) to Drive D (USB ash drive).
Welcome to FreeDOS (http://www.freedos.org)!
C:/> d:
D:/>
Updating the BIOS file
To update the BIOS le:
1. On the FreeDOS prompt, type bupdater /pc /g and press <Enter>.
D:/> bupdater /pc /g
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2. On the BIOS Updater screen, press <Tab> to switch from Files panel to Drives panel
then select D:.
ASUSTeK BIOS Updater for DOS V1.30 [2015/01/01]
Current ROM
BOARD:Z97-A/USB 3.1
VER:0305 (H :00 B :00)
DATE: 23/01/2015
PATH:C:\
Update ROM
BOARD:Unknown
VER:Unknown
DATE: Unknown
Drives panel
C:
D:
Note
FORMAN~1 <DIR>
Z97AUSB31.CAP 8390626 2015-01-01 21:14:34
[Enter] Select or Load [Tab] Switch [V] Drive Info
[Up/Down/Home/End] Move [Esc] Exit
Files panel
3. Press <Tab> to switch from Drives panel to Files panel then press <Up/Down or Home/
End> keys to select the BIOS le and press <Enter>.
4. After the BIOS Updater checks the selected BIOS le, select Yes to conrm the BIOS
update.
Are you sure you want to update the BIOS?
YesNo
The BIOS Backup feature is not supported due to security regulations.
5. Select Yes then press <Enter>. When BIOS update is done, press <ESC> to exit BIOS
Updater.
6. Restart your computer.
2-6
DO NOT shut down or reset the system while updating the BIOS to prevent system boot
failure.
Ensure to load the BIOS default settings to ensure system compatibility and stability. Select
Load Optimized Defaults item under the Exit BIOS menu. See section 2.10 Exit menu
for details.
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2.2 BIOS setup program
Use the BIOS Setup program to update the BIOS or congure its parameters. The BIOS
screens include navigation keys and brief online help to guide you in using the BIOS Setup
program.
Entering BIOS Setup at startup
To enter BIOS Setup at startup, press <Delete> during the Power-On Self Test (POST). If
you do not press <Delete>, POST continues with its routines.
Entering BIOS Setup after POST
To enter BIOS Setup after POST:
• Press <Ctrl>+<Alt>+<Del> simultaneously.
• Press the reset button on the system chassis.
• Press the power button to turn the system off then back on. Do this option only if you
failed to enter BIOS Setup using the rst two options.
Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force reset from a
running operating system can cause damage to your data or system. We recommend you
always shut down the system properly from the operating system.
• The BIOS setup screens shown in this section are for reference only. Some screen
displays may not be the same as what you see on your screen.
• Visit the ASUS website at www.asus.com to download the latest BIOS le for this
motherboard.
• Ensure that a USB mouse is connected to your motherboard if you want to use the
mouse to control the BIOS setup program.
• If the system becomes unstable after changing any BIOS setting, load the default
settings to ensure system compatibility and stability. Select the Load Optimized
Defaults item under the Exit menu or press hotkey F5. See section Exit Menu for
details.
• If the system fails to boot after changing any BIOS setting, try to clear the CMOS and
reset the motherboard to the default value. See section Jumpers for information on
how to erase the RTC RAM.
BIOS menu screen
The BIOS setup program can be used under two modes: EZ Mode and Advanced Mode.
You can change modes from the Exit menu or from the Exit/Advanced Mode button in the EZ
Mode/Advanced Mode screen.
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2.2.1 EZ Mode
By default, the EZ Mode screen appears when you enter the BIOS setup program. The EZ
Mode provides you an overview of the basic system information, and allows you to select
the display language, system performance mode and boot device priority. To access the
Advanced Mode, click Exit/Advanced Mode, then select Advanced Mode or press <F7> hot
key for the advanced BIOS settings.
The default screen for entering the BIOS setup program can be changed. Refer to the
Setup Mode item in section Boot menu for details.
Displays the system properties of the selected mode.
Displays the CPU/motherboard temperature,
CPU voltage output, CPU/chassis/power fan
speed, and SATA information
Selects the display language
of the BIOS setup program
Click < or > to switch EZ System Tuning modes
Creates storage RAID and
configures system overclocking
Enables or disables the Intel Rapid
Storage Technology
Displays the CPU Fan’s speed. Click
the button to manually tune the fans
The boot device options vary depending on the devices you installed to the system.
2-8
Loads optimized
default settings
Shows the
bootable devices
Saves the changes and
resets the system
Displays the Advanced
mode menus
Selects the boot
device priority
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2.2.2 Advanced Mode
The Advanced Mode provides advanced options for experienced end-users to congure
the BIOS settings. The gure below shows an example of the Advanced Mode. Refer to the
following sections for the detailed congurations.
To switch from EZ Mode to Advanced Mode, click Advanced Mode or press F7 hotkey.
System date and time settings
Menu bar
MyFavorite
LanguageEZ Tuning Wizard
Q-Fan control
Quick Note
Hot Keys
Menu items
General helpSub-menu item
ASUS Z97-A/USB 3.1
Configuration fields
Scroll bar
Displays the CPU/motherboard temperature,
Last modified settings
Goes back to EZ Mode
CPU and memory voltage output
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Menu bar
The menu bar on top of the screen has the following main items:
My Favorites
Main
Ai Tweaker
Advanced
Monitor
Boot
Tool
Exit
For saving the frequently-used system settings and conguration
For changing the basic system conguration
For changing the overclocking settings
For changing the advanced system settings
For displaying the system temperature, power status, and changing the
fan settings
For changing the system boot conguration
For conguring options for special functions
For selecting the exit options and loading default settings
Menu items
The highlighted item on the menu bar displays the specic items for that menu. For example,
selecting Main shows the Main menu items.
The other items (My Favorites, Ai Tweaker, Advanced, Monitor, Boot, Tool, and Exit) on the
menu bar have their respective menu items.
Submenu items
A greater than sign (>) before each item on any menu screen means that the item has a
submenu. To display the submenu, select the item and press <Enter>.
System date and time settings
This panel shows the time and date of your system. Click this panel to change the system
date and time settings.
Language
This button above the menu bar contains the languages that you can select for your BIOS.
Click this button to select the the language that you want to display in your BIOS screen.
MyFavorites (F3)
This button above the menu bar shows all BIOS items in a Tree Map setup. Select frequentlyused BIOS settings and save it to MyFavorites menu.
Refer to section 2.3 My Favorites for more information.
Q-Fan Control (F6)
This button above the menu bar displays the current settings of your fans. Use this button to
manually tweak the fans to your desired settings.
Refer to section 2.2.3 QFan Control for more information.
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EZ Tuning Wizard (F11)
This button above the menu bar allows you to view and tweak the overclocking settings of
your system. It also allows you to change the motherboard’s SATA mode from AHCI to RAID
mode.
Refer to section 2.2.4 EZ Tuning Wizard for more information.
Quick Note (F9)
This button above the menu bar allows you to key in notes of the activities that you have
done in BIOS.
• The Quick Note function does not support the following keyboard functions: delete,
cut, copy and paste.
• You can only use the alphanumeric characters to enter your notes.
Hot keys
This button above the menu bar contains the navigation keys for the BIOS setup program.
Use the navigation keys to select items in the menu and change the settings.
Scroll bar
A scroll bar appears on the right side of a menu screen when there are items that do not t
on the screen. Press the Up/Down arrow keys or <Page Up> / <Page Down> keys to display
the other items on the screen.
General help
At the top right corner of the menu screen is a brief description of the selected item. Use
<F12> key to capture the BIOS screen and save it to the removable storage device.
Configuration fields
These elds show the values for the menu items. If an item is user-congurable, you can
change the value of the eld opposite the item. You cannot select an item that is not
user-congurable.
A congurable eld is highlighted when selected. To change the value of a eld, select it and
press <Enter> to display a list of options.
Last Modified button
This button shows the items that you last modied and saved in BIOS Setup.
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2.2.3 QFan Control
The QFan Control allows you to set a fan prole or manually congure the operating speed of
your CPU and chassis fans.
Click to select a fan to be
configured
Click to activate
PWM Mode
Click to activate DC Mode
Select a profile to apply to
your fans
Click to apply the fan setting
Click to go back to main menu
Click to undo the changes
Select to manually configure
Configuring fans manually
Select Manual from the list of proles to manually congure your fans’ operating speed.
Speed points
Click or tap to manually configure your fans
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Page 67
To congure your fans:
1. Select the fan that you want to congure and to view its current status.
2. Click and drag the speed points to adjust the fans’ operating speed.
3. Click Apply to save the changes then click Exit (ESC).
2.2.4 EZ Tuning Wizard
EZ Tuning Wizard allows you to overclock your CPU and DRAM, computer usage, and CPU
fan to their best settings. You can also easily set RAID in your system using this feature.
System OC setup
Tuning your system settings
To tune your settings:
1. Press <F11> on your keyboard or click
EZ Tuning Wizard screen, then click Next.
2. Select a PC scenario Daily Computing or Gaming/Media Editing, then click Next.
3. Select the CPU fan type (Box cooler, Tower cooler, or Water cooler) that you
installed then click Next.
If you are not sure of the CPU fan type, click I’m not sure. The system automatically
detects the CPU fan type.
4. Click Next then click Yes to conrm auto-tuning.
from the BIOS screen to open
RAID setup
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Creating RAID
To create RAID:
1. Press <F11> on your keyboard or click
EZ Tuning Wizard screen.
2. Click RAID then click Next.
• Ensure that your HDDs have no existing RAID volumes.
• Ensure to connect your HDDs to Intel
®
SATA connectors.
3. Select the type of storage for your RAID Easy Backup or Super Speed, then click
Next.
a. For Easy Backup, click
Next then select from Easy
Backup (RAID1) or Easy
Backup (RAID10).
You can only select Easy
Backup (RAID 10) if you
connect four (4) HDDs.
b. For Easy Backup, click Next
then select from Super
Speed (RAID0) or Super
Speed (RAID5).
from the BIOS screen to open
4. After selecting the type of RAID, click Next then click Yes to continue the RAID setup.
5. After the RAID setup is done, click Yes to exit the setup then click OK to reset your
system.
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2.3 My Favorites
MyFavorites is your personal space where you can easily save and access your favorite
BIOS items.
Adding items to My Favorites
To add BIOS items:
1. Press <F3> on your keyboard or click
from the BIOS screen to open
Setup Tree Map screen.
2. On the Setup Tree Map screen, select the BIOS items that you want to save in
MyFavorites screen.
Main menu panel
Selected shortcut
items
Submenu panel
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3. Select an item from main menu panel, then click the submenu that you want to save as
favorite from the submenu panel and click
You cannot add the following items to My Favorite items:
• Items with submenu options
• User-managed items such as language and boot order
• Conguration items such as Memory SPD Information, system time and date.
.
4. Click Exit (ESC) or press <esc> key to close Setup Tree Map screen.
5. Go to My Favorites menu to view the saved BIOS items.
2.4 Main menu
The Main menu screen appears when you enter the Advanced Mode of the BIOS Setup
program. The Main menu provides you an overview of the basic system information, and
allows you to set the system date, time, language, and security settings.
2.4.1 Security
The Security menu items allow you to change the system security settings.
• If you have forgotten your BIOS password, erase the CMOS Real Time Clock (RTC)
RAM to clear the BIOS password. See section Jumpers for information on how to
erase the RTC RAM.
• The Administrator or User Password items on top of the screen show the default
Not Installed. After you set a password, these items show Installed.
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Administrator Password
If you have set an administrator password, we recommend that you enter the administrator
password for accessing the system. Otherwise, you might be able to see or change only
selected elds in the BIOS setup program.
To set an administrator password:
1. Select the Administrator Password item and press <Enter>.
2. From the Create New Password box, key in a password, then press <Enter>.
3. Conrm the password when prompted.
To change an administrator password:
1. Select the Administrator Password item and press <Enter>.
2. From the Enter Current Password box, key in the current password, then press
<Enter>.
3. From the Create New Password box, key in a new password, then press <Enter>.
4. Conrm the password when prompted.
To clear the administrator password, follow the same steps as in changing an administrator
password, but press <Enter> when prompted to create/conrm the password. After you clear
the password, the Administrator Password item on top of the screen shows Not Installed.
User Password
If you have set a user password, you must enter the user password for accessing the system.
The User Password item on top of the screen shows the default Not Installed. After you set
a password, this item shows Installed.
To set a user password:
1. Select the User Password item and press <Enter>.
2. From the Create New Password box, key in a password, then press <Enter>.
3. Conrm the password when prompted.
To change a user password:
1. Select the User Password item and press <Enter>.
2. From the Enter Current Password box, key in the current password, then press
<Enter>.
3. From the Create New Password box, key in a new password, then press <Enter>.
4. Conrm the password when prompted.
To clear the user password, follow the same steps as in changing a user password, but press
<Enter> when prompted to create/conrm the password. After you clear the password, the
User Password item on top of the screen shows Not Installed.
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2.5 Ai Tweaker menu
The Ai Tweaker menu items allow you to congure overclocking-related items.
Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect eld
values can cause the system to malfunction.
The conguration options for this section vary depending on the CPU and DIMM model you
installed on the motherboard.
Scroll down to display other BIOS items.
2.5.1 Ai Overclock Tuner [Auto]
This item allows you to select the CPU overclocking options to achieve the desired CPU
internal frequency. Select any of these preset overclocking conguration options:
[Auto] Loads the optimal settings for the system.
[Manual] Automatically optimizes the CPU ratio and BCLK frequency.
[X.M.P.] If you install memory modules supporting the eXtreme Memory Prole
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(X.M.P) Technology, choose this item to set the proles supported by your
memory modules for optimizing the system performance.
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The following item appears only when you set the Ai Overclocking Tuner to [Manual].
Filter PLL [Auto]
Set this item to high BCLK (base clock) mode when using a very high BCLK to improve
This item allows you to set the BCLK (base clock) frequency to enhance the system
performance. Use the <+> or <-> to adjust the value. The values range from 80.0 MHz to
300.0 MHz.
We recommend you to set the value based on the CPU specication, as high BCLK
frequencies may damage the CPU permanently.
Initial BCLK Frequency [Auto]
This item allows you to start overclocking the system from the initial BCLK (base clock)
frequency to the assigned BCLK frequency. Use the <+> or <-> to adjust the value. The value
ranges depend on the value you set on BCLK Frequency.
The following item appears only when you set the Ai Overclocking Tuner to [X.M.P.].
eXtreme Memory Profile
This item allows you to select the X.M.P. mode supported by your memory module.
Conguration options: [Prole #1] [Prole #2]
2.5.2 ASUS MultiCore Enhancement [Auto]
[Auto] This item allows you to maximize the oveclocking performance optimized
[Disabled] This item allows you to set to default core ratio settings.
by ASUS core ratio settings.
2.5.3 CPU Core Ratio [Sync All Cores]
This item allows you to set the CPU core ratio limit per core or synchronize automatically to
all cores.
Conguration options: [Auto] [Sync All Cores] [Per Core]
When the CPU Core Ratio is set to [Per Core], the following items appear:
1-Core Ratio Limit [Auto]
Select [Auto] to apply the CPU default Turbo Ratio setting or manually
assign a 1-Core Limit value that must be higher than or equal to the 2-Core
Ratio Limit.
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2-Core Ratio Limit [Auto]
Select [Auto] to apply the CPU default Turbo Ratio setting or manually
assign a 2-Core Limit value that must be higher than or equal to the 3-Core
Ratio Limit.
If you assign a value for 2-Core Ratio Limit, do not set the 1-Core Ratio Limit to [Auto].
3-Core Ratio Limit [Auto]
Select [Auto] to apply the CPU default Turbo Ratio setting or manually
assign a 3-Core Limit value that must be higher than or equal to the 4-Core
Ratio Limit.
If you assign a value for 3-Core Ratio Limit, do not set the 1-Core Ratio Limit and 2-Core
Ratio Limit to [Auto].
4-Core Ratio Limit [Auto]
Select [Auto] to apply the CPU default Turbo Ratio setting or manually
assign a 4-Core Limit value that must be higher than or equal to the 3-Core
Ratio Limit.
If you assign a value for 4-Core Ratio Limit, do not set the 1-Core Ratio Limit, 2-Core Ratio
Limit, and 3-Core Ratio to [Auto].
2.5.4 Min. CPU Cache Ratio [Auto]
This item allows you to set the minimum possible ratio on the Uncore part of the processor.
Use the <+> or <-> keys to adjust the value. The values depend on the CPU installed.
2.5.5 Max. CPU Cache Ratio [Auto]
This item allows you to set the maximum possible ratio on the Uncore part of the processor.
Use the <+> or <-> keys to adjust the value. The values depend on the CPU installed.
2.5.6 Internal PLL Overvoltage [Auto]
This item allows you to enable the internal PLL Overvoltage for K-SKU CPUs to get the
extreme overclocking capability.
Conguration options: [Auto] [Enabled] [Disabled]
2.5.7 CPU Ratio Tuner [Auto]
This item allows you to enhance the overclocking capability of non-K series CPUs.
Conguration options: [Auto] [Enabled] [Disabled]
2.5.8 BCLK Frequency: DRAM Frequency Ratio [Auto]
This item allows you to congure the setting of the BCLK frequency to DRAM frequency ratio.
[Auto] The BCLK to DRAM frequency ratio is set to its optimized setting
[100:133] The BCLK frequency to DRAM frequency ratio is set to 100:133
[100:100] The BCLK frequency to DRAM frequency ratio is set to 100:100
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2.5.9 DRAM Frequency [Auto]
This item allows you to set the memory operating frequency. The congurable options vary
with the BCLK (base clock) frequency setting. Select the auto mode to apply the optimized
[Auto] This option allows you to automatically optimize the CPU Graphics Ratio
[Manual] This option allows you to set a value for an optimal CPU Graphics Ratio.
depending on the system loading.
Use the <+> or <-> keys to adjust the CPU graphics ratio. The minimum
value depends on the installed CPU.
2.5.11 OC Tuner [Keep Current Settings]
This item allows you to automatically overclock the CPU and DRAM frequencies and voltage
for an enhanced system performance. It also accelerates the CPU graphics performance to
the extreme depending on the CPU graphics loading.
Conguration options: [Keep Current Settings] [Ratio First] [BCLK First]
Ensure that you installed an efcient CPU fan for CPU and graphics loading before
selecting either [BCLK First] or [Ratio First]. To keep the current overclocking tuner
status, select [Keep Current Settings].
2.5.12 EPU Power Saving Mode [Disabled]
The ASUS EPU (Energy Processing Unit) sets the CPU in its minimum power consumption
settings. Enable this item to set lower CPU VCCIN and Vcore voltages and achieve the best
energy saving condition.
Conguration options: [Disabled] [Enabled]
2.5.13 DRAM Timing Control
The subitems in this menu allow you to set the DRAM timing control features. Use the <+> or
<-> keys to adjust the value. To restore the default setting, type [Auto] using the keyboard
and press the <Enter> key.
Changing the values in this menu may cause the system to become unstable! If this
happens, revert to the default settings.
Primary Timings
DRAM CAS# Latency [Auto]
Conguration options: [Auto] [1] – [31]
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DRAM RAS# to CAS# Delay [Auto]
Conguration options: [Auto] [1] – [31]
DRAM RAS# PRE Time [Auto]
Conguration options: [Auto] [1] – [31]
DRAM RAS# ACT Time [Auto]
Conguration options: [Auto] [1] – [63]
DRAM Command Rate [Auto]
Conguration options: [Auto] [1] – [2]
Secondary Timings
DRAM RAS# to RAS# Delay [Auto]
Conguration options: [Auto] [1] – [15]
DRAM REF Cycle Time [Auto]
Conguration options: [Auto] [1] – [511]
DRAM Refresh Interval [Auto]
Conguration options: [Auto] [1] – [65535]
DRAM WRITE Recovery Time [Auto]
Conguration options: [Auto] [1] – [16]
DRAM READ to PRE Time [Auto]
Conguration options: [Auto] [1] – [15]
DRAM FOUR ACT WIN Time [Auto]
Conguration options: [Auto] [1] – [255]
DRAM WRITE to READ Delay [Auto]
Conguration options: [Auto] [1] – [15]
DRAM CKE Minimum Pulse Width [Auto]
Conguration options: [Auto] [1] – [15]
DRAM CAS# Write Latency [Auto]
Conguration options: [Auto] [1] – [31]
RTL IOL control
DRAM RTL Initial Value [Auto]
Conguration options: [Auto] [1] - [63]
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DRAM RTL (CHA_R0D0) [Auto]
Conguration options: [Auto] [1] - [63]
DRAM RTL (CHA_R0D1) [Auto]
Conguration options: [Auto] [1] - [63]
DRAM RTL (CHA_R1D0) [Auto]
Conguration options: [Auto] [1] - [63]
DRAM RTL (CHA_R1D1) [Auto]
Conguration options: [Auto] [1] - [63]
DRAM RTL (CHB_R0D0) [Auto]
Conguration options: [Auto] [1] - [63]
DRAM RTL (CHB_R0D1) [Auto]
Conguration options: [Auto] [1] - [63]
DRAM RTL (CHB_R1D0) [Auto]
Conguration options: [Auto] [1] - [63]
DRAM RTL (CHB_R1D1) [Auto]
Conguration options: [Auto] [1] - [63]
DRAM IO-L (CHA_R0D0) [Auto]
Conguration options: [Auto] [1] - [15]
DRAM IO-L (CHA_R0D1) [Auto]
Conguration options: [Auto] [1] - [15]
DRAM IO-L (CHA_R1D0) [Auto]
Conguration options: [Auto] [1] - [15]
DRAM IO-L (CHA_R1D1) [Auto]
Conguration options: [Auto] [1] - [15]
DRAM IO-L (CHB_R0D0) [Auto]
Conguration options: [Auto] [1] - [15]
DRAM IO-L (CHB_R0D1) [Auto]
Conguration options: [Auto] [1] - [15]
DRAM IO-L (CHB_R1D0) [Auto]
Conguration options: [Auto] [1] - [15]
DRAM IO-L (CHB_R1D1) [Auto]
Conguration options: [Auto] [1] - [15]
Third Timings
tRDRD [Auto]
Conguration options: [Auto] [1] - [7]
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tRDRD_dr [Auto]
Conguration options: [Auto] [1] - [15]
tRDRD_dd [Auto]
Conguration options: [Auto] [1] - [15]
tWRRD [Auto]
Conguration options: [Auto] [1] - [63]
tWRRD_dr [Auto]
Conguration options: [Auto] [1] - [15]
tWRRD_dd [Auto]
Conguration options: [Auto] [1] - [15]
tWRWR [Auto]
Conguration options: [Auto] [1] - [7]
tWRWR_dr [Auto]
Conguration options: [Auto] [1] - [15]
tWRWR_dd [Auto]
Conguration options: [Auto] [1] - [15]
Dec_WRD [Auto]
Conguration options: [Auto] [0] [1]
tRDWR [Auto]
Conguration options: [Auto] [1] - [31]
tRDWR_dr [Auto]
Conguration options: [Auto] [1] - [31]
tRDWR_dd [Auto]
Conguration options: [Auto] [1] - [31]
MISC
MRC Fast Boot [Auto]
This item allows you to enable, disable or automatically set the MRC fast boot.
Conguration options: [Auto] [Enabled] [Disabled]
DRAM CLK Period [Auto]
This item allows you to set a DRAM clock period.
Conguration options: [Auto] [1] – [14]
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Channel A/B DIMM Control [Enable Both DIMMs]
This item allows you to enable or disable the DIMMs on channels A and B.
Conguration options: [Enable Both DIMMS] [Disable DIMM0] [Disable DIMM1] [Disable Both
DIMMS]
Scrambler Setting [Optimized (ASUS)]
This item allows you to set the optimized mode to enhance system stability.
Enable this item to enhance the stability of your system. Disable this item to enhance the
DRAM overclocking capability.
Conguration options: [Auto] [Enabled] [Disabled]
Skew Control
The subitems in this menu allows you to enhance the DRAM overclocking capability and
stability. Use the <+> or <-> keys to adjust the value. To restore the default setting, type
[Auto] using the keyboard and press the <Enter> key.
Transmitter Rising Slope [Auto]
Conguration options: [Auto] [1] - [31]
Transmitter Falling Slope [Auto]
Conguration options: [Auto] [1] - [31]
Transmitter Control Time [Auto]
Conguration options: [Auto] [1] - [31]
Receiver Rising Slope [Auto]
Conguration options: [Auto] [1] - [31]
Receiver Falling Slope [Auto]
Conguration options: [Auto] [1] - [31]
Receiver Control Time [Auto]
Conguration options: [Auto] [1] - [31]
2.5.14 DIGI+ VRM
CPU Load-line Calibration [Auto]
Load-line is dened by Intel® specication and affects CPU power voltage. The CPU working
voltage decreases proportionally to CPU loading. Higher load-line calibration could get
higher voltage and good overclocking performance, but increases the CPU and VRM thermal
conditions. Select from levels 1 to 9 to adjust the CPU power voltage from 0% to 115%.
Conguration options [Auto] [Level 1] - [Level 9]
The actual performance boost may vary depending on your CPU specication.
DO NOT remove the thermal module. The thermal conditions should be monitored.
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CPU VRM Switching Frequency [Auto]
This item affects the VRM transient response speed and the component thermal production.
Select [Manual] to congure a higher frequency for a quicker transient response speed.
Conguration options: [Auto] [Manual]
DO NOT remove the thermal module. The thermal conditions should be monitored.
The following item appears only when you set the CPU VRM Switching Frequency to
[Manual].
Fixed CPU VRM Switching Frequency (KHz) [300]
This item allows you to set a higher frequency for a quicker transient response speed.
Use the <+> or <-> to adjust the value. The values range from 250 KHz to 500 KHz
with an interval of 50 KHz.
VRM Spread Spectrum [Disabled]
This item allows to enhance the system stability.
Conguration options: [Disabled] [Enabled]
CPU Power Phase Control [Auto]
This item allows you to set the power phase control of the CPU.
DO NOT remove the thermal module when setting this item to [Extreme]. The thermal
conditions should be monitored.
CPU Power Duty Control [T.Probe]
DIGI + VRM Duty Control adjusts the current of every VRM phase and the thermal conditions
of every phase component.
[T. Probe] Select to maintain the VRM thermal balance.
[Extreme] Select to maintain the current VRM balance.
DO NOT remove the thermal module. The thermal conditions should be monitored.
CPU Current Capability [Auto]
This item provides a total power range for CPU overclocking. A higher value setting
provides higher power consumption delivery and extends the overclocking frequency range
simultaneously.
The subitems in this menu allow you to set the CPU ratio and their features.
Enhanced Intel SpeedStep Technology [Enabled]
This item allows the operating system to dynamically adjust the processor voltage and cores
frequency, resulting to a decreased average power consumption and decreased average
heat production.
Conguration options: [Disabled] [Enabled]
Turbo Mode [Enabled]
This item allows you to enable your core processor’s speed to run faster than the base
operating frequency when it is below operating power, current and temperature specication
limit.
Conguration options: [Disabled] [Enabled]
The following items appear only when you set the Turbo Mode to [Enabled].
Turbo Mode Parameters
Long Duration Package Power Limit [Auto]
Allows you to limit the Turbo Ratio’s time duration that exceeds the TDP (Thermal
Design Power) for maximum performance. Use the <+> or <-> keys to adjust the value.
The values range from 1 W t0 4096 W.
Package Power Time Window [Auto]
Also known as Power Limit 1, this item allows you to maintain the time window for
Turbo Ratio over TDP (Thermal Design Power). Use the <+> or <-> keys to adjust the
value. The values range from 1 to 127 in seconds.
Short Duration Package Power Limit [Auto]
Also known as Power Limit 2, this item allows you to provide rapid protection when
the package power exceeds the Power Limit 1. Use the <+> or <-> keys to adjust the
value. The values range from 1 W to 4096 W.
CPU Integrated VR Current Limit [Auto]
Allows you to set a higher current limit to prevent frequency and power throttling when
overclocking. Use the <+> or <-> keys to adjust the value. The values range from
0.125 to 1023.875 with a 0.125 interval.
CPU Internal Power Switching Frequency
Frequency Tuning Mode [Auto]
This item allows you to increase or decrease the switching frequency of the internal
regulator. Decrease the switching frequency to reduce the power consumption or
increase the switching frequency to enhance voltage stability. When this item is set to
[+] or [-], the Frequency Tuning Offset appears that allows you to set its value from 0%
to 6%.
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CPU Internal Power Fault Control
Thermal Feedback [Auto]
This item allows your system to take precautionary actions to protect the CPU when
the thermal condition of the external regulator exceeds the threshold.
Conguration options: [Auto] [Disabled] [Enabled]
CPU Integrated VR Fault Management [Auto]
Disable this item to prevent tripping the Fully Integrated Voltage Regulator when doing
over-voltage. We recommend you to disable this item when overclocking.
Conguration options: [Auto] [Disabled] [Enabled]
CPU Internal Power Configuration
CPU Integrated VR Efficiency Management [Auto]
This item allows you to improve the power rating when the CPU is in low power state,
or make the FIVR (fully integrated voltage regulator work in high performance at all
times.
This item allows your system to improve the power saving mode on the Fully Integrated
Voltage Regulator as the processor goes into low current state.
Conguration options: [Auto] [Disabled] [Enabled]
Idle Power-in Response [Auto]
This item allows you to set the slew rate for the Fully Integrated Voltage Regulator
when it enters manual override mode.
Conguration options: [Auto] [Regular] [Fast]
Idle Power-out Response [Auto]
This item allows you to set the slew rate for the Fully Integrated Voltage Regulator
when it exits manual override mode.
Conguration options: [Auto] [Regular] [Fast]
Power Current Slope [Auto]
This item allows you to enhance the power saving condition or the system overclocking
capabiltity. Select a higher power current slope levels for power saving enhancement
or lower power current slope levels for system overclocking enhancement.
This item allows you to increase or decrease the output current sensed by the CPU. It
nds the balance between optimal regulating while staying below the current threshold.
Conguration options: [Auto] [100%] [87.5%] [75.0%] [62.5%] [50.0%] [37.5%] [25.0%]
This item allows you to enhance the response of the CPU voltage regulator during the
load transients. Use the <+> or <-> to adjust the value. The values range from 0.00 to
1.50.
Conguration options: [Auto] [0.00] - [1.50]
CPU Internal Power Saving Control
Power Saving Level 1 Threshold [Auto]
Lower value provides sufcient overclocking tolerance to enlarge the overclocking
potential. Higher value provides better power-saving condition.Use <+> or <-> key to
adjust the value. The values range from 0 A to 80 A at 1 A increment.
Power Saving Level 2 Threshold [Auto]
Lower value provides sufcient overclocking tolerance to enlarge the overclocking
potential. Higher value provides better power-saving condition.Use <+> or <-> key to
adjust the value. The values range from 0 A to 50 A at 1 A increment.
Power Saving Level 3 Threshold [Auto]
Lower value provides sufcient overclocking tolerance to enlarge the overclocking
potential. Higher value provides better power-saving condition.Use <+> or <-> key to
adjust the value. The values range from 0 A to 30 A at 1A increment.
2.5.16 Extreme Over-voltage
This item allows you to set higher voltages for overclocking. When you enable this item, you
can choose a high level voltage to overclock, but does not guarantee the CPU life.
You can only enable this item when the onboard OC_CPU jumper is set to ON. Refer to
section 1.6 Jumpers of this user guide for more details.
2.5.17 CPU Core Voltage
This item allows you to congure the amount of voltage fed to the CPU cores. Increase the
The following item appears only when you set the CPU Core Voltage to [Manual].
CPU Core Voltage Override [Auto]
This item allows you to set the CPU Core Voltage override. Use the <+> or <-> keys to
adjust the value, The values range from 0.001V to 1.920 V with a 0.001 V interval.
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The following items appear only when you set the CPU Core Voltage to [Offset Mode].
Offset Mode Sign [+]
[+] To offset the voltage by a positive value.
[–] To offset the voltage by a negative value.
CPU Core Voltage Offset
Use the <+> or <-> keys to adjust the value. The values range from 0.001 V to 0.999 V
with a 0.001 V interval.
2.5.18 CPU Cache Voltage [Auto]
This item allows you to set the amount of voltage fed to the CPU uncores including its cache.
Increase the voltage when setting a high CPU cache frequency.
The following item appears only when you set the CPU Cache Voltage to [Manual Mode].
CPU Cache Voltage Override [Auto]
This item allows you to set the CPU Cache Voltage override. By default, this item takes the
standard value of the installed CPU. You can use the <+> or <-> keys to adjust the value.
The values range from 0.001V to 1.920 V with a 0.001 V interval.
CPU Cache Voltage Override [Auto]
This item allows you to set the CPU Cache Voltage override. By default, this item takes
the standard value of the installed CPU. You can use the <+> or <-> keys to adjust the
value. The values range from 0.001V to 1.920 V with a 0.001 V interval.
The following items appear only when you set the CPU Core Voltage to [Offset Mode].
Offset Mode Sign [+]
[+] To offset the voltage by a positive value.
[–] To offset the voltage by a negative value.
CPU Cache Voltage Offset
Allows you to set the CPU cache voltage offset. By default, this item takes
the standard value of the installed CPU. You can use the <+> or <-> keys
to adjust the value. The values range from 0.001V to 0.999 V with a 0.001
V interval.
CPU Graphics Voltage [Auto]
This item allows you to congure the voltage amount for the integrated graphics processing
unit (iGPU). Increase the voltage when setting a high iGPU frequency value.
The following item appears only when you set the CPU Core Voltage to [Manual].
CPU Graphics Voltage Override [Auto]
This item allows you to set the CPU Graphics Voltage override. By default, this item
takes the standard value of the installed CPU. You can use the <+> or <-> keys to
adjust the value. The values range from 0.001V to 1.920V with a 0.001V interval.
The following items appear only when you set the CPU Core Voltage to [Offset Mode].
Offset Mode Sign [+]
[+] To offset the voltage by a positive value.
[–] To offset the voltage by a negative value.
CPU Graphics Voltage Offset
By default, this item takes the standard value of the installed CPU. You can
use the <+> or <-> keys to adjust the value. The values range from 0.001V
to 0.999V with a 0.001V interval.
The following item appears only when you set the CPU Core Voltage to [Adaptive Mode].
Additional Turbo Mode CPU Graphics Voltage [Auto]
This item allows you to increase the voltage for Turbo Mode CPU Graphics.
By default, this item takes the standard value of the installed CPU. You can
use the <+> or <-> keys to adjust the value. The values range from 0.001V
to 1.920V with a 0.001V interval.
Total Adaptive Mode CPU Graphics Voltage [Auto]
This item sums up the voltages of the CPU Graphics Voltage offset and
Additional Turbo Mode CPU Graphics Voltage options.
2.5.19 CPU System Agent Voltage Offset Mode Sign [+]
[+] To offset the voltage by a positive value.
[–] To offset the voltage by a negative value.
CPU System Agent Voltage Offset [Auto]
This item allows you to set the amount of voltage fed to the system agent of the CPU
including its PCIE controller and the PCU (power control unit). Increase the voltage to
enhance the overclocking capability.
You can use the <+> or <-> keys to adjust the value. The values range from 0.001 V to 0.999
V with a 0.001 V interval.
2.5.20 CPU Analog I/O Voltage Offset Mode Sign [+]
[+] To offset the voltage by a positive value.
[–] To offset the voltage by a negative value.
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CPU Analog I/O Voltage Offset [Auto]
This item allows you to set the amount of voltage fed to the analog portion of the I/O on the
CPU. By default, this item takes the standard value of the installed CPU. Increase the amount
of voltage to enhance the overclocking capability.
You can use the <+> or <-> keys to adjust the value. The values range from 0.001 V to 0.999
V with a 0.001 V interval.
2.5.21 CPU Digital I/O Voltage Offset Mode Sign [+]
[+] To offset the voltage by a positive value.
[–] To offset the voltage by a negative value.
CPU Digital I/O Voltage Offset [Auto]
This item allows you to set the amount of voltage fed to the digital portion of the I/O on the
processor. By default, this item takes the standard value of the installed CPU. Increase the
amount of voltage to enhance the overclocking capability.
You can use the <+> or <-> keys to adjust the value. The values range from 0.001 V to 0.999
V with a 0.001 V interval.
2.5.22 SVID Support [Auto]
Set this item to [Enabled] when overclocking your system. Disabling this item stops the CPU
from communicating with the external voltage regulator.
Conguration options: [Auto] [Disabled] [Enabled]
The following item appears only when you set SVID Support to [Enabled].
SVID Voltage Override [Auto]
This item allows you to set the SVID Voltage override. By default, this item takes the standard
value of the installed CPU. You can use the <+> or <-> keys to adjust the value. The values
range from 0.001V to 2.440 V with a 0.001 V interval.
2.5.23 CPU Input Voltage [Auto]
This item allows you to set an input voltage for the CPU by the external voltage regulator. By
default, this item takes the standard value of the installed CPU. You can use the <+> or <->
keys to adjust the value. The values range from 0.800 V to 2.700 V with a 0.010 V interval.
2.5.24 DRAM Voltage [Auto]
This item allows you to set the DRAM voltage. You can use the <+> or <-> keys to adjust the
value. The values range from 1.20 V to 1.92 V with a 0.01 V interval.
According to Intel® CPU specications, DIMMs with voltage requirement over 1.65 V may
damage the CPU permanently. We recommend that you install the DIMMs with the voltage
requirement below 1.65 V.
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2.5.25 PCH Core Voltage [Auto]
This item allows you to set the Core voltage for the PCH (Platform Controller Hub). You can
use the <+> or <-> keys to adjust the value. The values range from 0.70 V to 1.5 V with a
0.0125 V interval.
• The values of the CPU PLL Voltage, CPU Manual Voltage, CPU Offset Voltage,
iGPU Manual Voltage, iGPU Offset Voltage, DRAM Voltage, VCCSA Voltage, VCCIO
Voltage, and PCH Voltage items are labeled in different color, indicating the risk levels
of high voltage settings.
• The system may need better cooling system for a more stable performance under high
voltage settings.
2.5.26 PCH VLX Voltage [Auto]
This item allows you to set the I/O voltage on the PCH (Platform Controller Hub). You can
use the <+> or <-> keys to adjust the value. The values range from 1.2000 V to 2.0000 V with
a 0.0125 V interval.
2.5.27 VTTDDR Voltage [Auto]
This item allows you to set the termination voltage for the system memory. You can use
the <+> or <-> keys to adjust the value. The values range from 0.6000 V to 1.0000 V with a
0.0125 V interval.
2.5.28 DRAM CTRL REF Voltage [Auto]
This item allows you to set the DRAM reference voltage on the control lines from the memory
bus. You can use the <+> or <-> keys to adjust the value. The values range from 0.39500x to
0.63000x with a 0.00500x interval.
To set a value for the DRAM reference voltage, we recommend you to set a value close to
the standard value which is 0.500000x.
2.5.29 DRAM DATA REF Voltage on CHA/CHB [Auto]
This item allows you to set the DRAM reference voltage on the data lines on Channels A and
B. You can use the <+> or <-> keys to adjust the value. The values range from 0.39500x to
0.63000x with a 0.00500x interval.
To set a value for the DRAM reference voltage, we recommend you to set a value close to
the standard value which is 0.500000x.
2.5.30 Clock Crossing Boot Voltage [Auto]
This item allows you to increase the value of the clock crossing voltage boot when the rising
edge of the BCLK DN is equal to the falling edge of the BCLK D+. You can use the <+> or
<-> keys to adjust the value. The values range from 0.1 V to 1.9 V with a 0.00625 V interval.
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2.5.31 Clock Crossing Reset Voltage [Auto]
This item allows you to increase the value of the clock crossing reset voltage when the rising
edge of the BCLK DN is equal to the falling edge of the BCLK D+. You can use the <+> or
<-> keys to adjust the value. The values range from 0.1 V to 1.9 V with a 0.00625 V interval.
2.5.32 Clock Crossing Voltage [Auto]
This item allows you to increase the value of the clock crossing voltage when the rising edge
of the BCLK DN is equal to the falling edge of the BCLK D+. You can use the <+> or <-> keys
to adjust the value. The values range from 0.1 V to 1.9 V with a 0.00625 V interval.
2.5.33 CPU Spread Spectrum [Auto]
This item allows you to enhance the BCLK overclocking capability or reduce the EMI
(electromagnetic disturbance) generated by the BCLK. Set this item to [Enabled] for EMI
reduction, or set this item to [Disabled] to enhance BCLK overclocking.
Conguration options: [Auto] [Disabled] [Enabled]
2.6 Advanced menu
The Advanced menu items allow you to change the settings for the CPU and other system
devices.
Be cautious when changing the settings of the Advanced menu items. Incorrect eld values
can cause the system to malfunction.
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2.6.1 CPU Configuration
The items in this menu show the CPU-related information that the BIOS automatically
detects.
The items shown in submenu may be different due to the CPU you installed.
Intel Adaptive Thermal Monitor [Enabled]
This item allows you to protect the CPU by decreasing its frequency as it reaches the thermal
throttle point. The thermal monitor includes TM1 (Thermal monitor 1), TM2 (Thermal monitor
2), and EMTTM (Enhanced Multi-threaded Thermal Monitoring).
Conguration options: [Disabled] [Enabled]
Active Processor Cores [All]
This item allows you to select the number of CPU cores to activate in each processor
package.
Conguration options: [All] [1] [2] [3]
Limit CPUID Maximum [Disabled]
When set to [Enabled], this item allows the legacy OS to boot even without support for CPUs
with extended CPUID functions.
Conguration options: [Disabled] [Enabled]
Execute Disable Bit [Enabled]
Execute Disable prevents certain classes of malicious buffer overow attacks when combined
with a supporting OS (SuSE Linux 9.2, RedHat Enterprise 3 Update 3).
Conguration options: [Disabled] [Enabled]
Intel Virtualization Technology [Disabled]
When set to [Enabled], a VMM can utilize the additional hardware capabilities provided by
Vanderpool Technology.
Conguration options: [Disabled] [Enabled]
Hardware Prefetcher(L2 Cache) [Enabled]
This item allows the CPU to prefetch commands and data in the L2 cache, reduces the
DRAM loading time and improves the system performance.
Conguration options: [Disabled] [Enabled]
Adjacent Cache Line Prefetcher [Enabled]
This item allows the mid level cache (L2) to prefetch adjacent cache lines, reducing the
DRAM loading time and improves the system performance.
Conguration options: [Disabled] [Enabled]
Boot Performance Mode [Max Non-Turbo Performance]
This item allows you to select the CPU performance state during system boot before the
operating system takes control. The CPU runs at a selected performance ratio based on CPU
This item allows you to accelerate the performance of the SSDs (Solid-State Drives) by
dynamically adjusting the power management during heavy multitasking.
Conguration options: [Enabled] [Disabled]
CPU Power Management Configuration
This item allows you to manage and congure the CPU’s power.
Enhanced Intel SpeedStep Technology [Enabled]
This item allows your system to adjust the CPU’s voltage and cores frequency,
resulting in decreased power consumption and heat production.
[Disabled] The CPU runs at its default speed.
[Enabled] The system controls the CPU speed.
Turbo Mode [Enabled]
This item allows you to automatically set the CPU cores to run faster than the base
operating frequency when it is below the operating power, current and temperature
This item allows you to congure the PCI Express slots.
PCIe Speed [Auto]
This item allows your system to automatically select the PCI Express port speed. When
set to [Gen1], the PCI-E port runs at PCI-E 1.0 speed. When set to [Gen2], the PCI-E
port runs at PCI-E 2.0 speed.
Conguration options: [Auto] [Gen1] [Gen2]
Intel Rapid Start Technology [Disabled]
This item allows you to enable or disable Intel® Rapid Start Technology.
Conguration options: [Enabled] [Disabled]
The following items appear only when you set the Intel® Rapid Start Technology to
[Enabled].
Entry on S3 RTC Wake [Enabled]
The system automatically wakes up and set to Rapid Start Technology S3 mode.
Conguration options: [Enabled] [Disabled
Entry After [0]
This item allows you to set the RTC wake-up timer at S3 entry. The time
ranges from 0 minute (immediately) to 120 minutes.
Active Page Threshold Support [Enabled]
The system automatically goes into sleep mode when the partition size is not enough
for the Intel® Rapid Start Technology to work.
Conguration options: [Enabled] [Disabled]
Active Memory Threshold [0]
This item supports Intel Rapid Storage Technology when the partition size
is greater than the Active Page Threshold size. When set to zero (0), it will
go to Auto mode and checks if the partition size is enough at S3 entry.
Ensure that the caching partition size is larger than the total memory size.
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Hybrid Hard Disk Support [Disabled]
This item allows you to enable or disable the hybrid hard disk support for a faster
resume time.
Conguration options: [Enabled] [Disabled]
Intel Smart Connect Technology
This item allows the system to support Intel Smart Connect Technology, that periodically
refreshes selected applications when the system is in sleep mode.
Conguration options: [Enabled] [Disabled]
2.6.3 PCH Storage Configuration
While entering Setup, the BIOS automatically detects the presence of SATA devices. The
SATA Port items show Not Present if no SATA device is installed to the corresponding SATA
port.
SATA Mode Selection [AHCI]
This item allows you to set the SATA conguration.
[Disabled] Disables the SATA function.
[IDE Mode] Set to [IDE Mode] when you want to use the Serial ATA hard disk drives as
[AHCI Mode] Set to [AHCI Mode] when you want the SATA hard disk drives to use the
[RAID Mode] Set to [RAID Mode] when you want to create a RAID conguration from the
Parallel ATA physical storage devices.
AHCI (Advanced Host Controller Interface). The AHCI allows the onboard
storage driver to enable advanced Serial ATA features that increases
storage performance on random workloads by allowing the drive to
internally optimize the order of commands.
SATA hard disk drives.
The following item appears only when you set the SATA Mode Selection to [RAID].
Pcie Nand Configuration [Auto]
This item allows you to enable or disable PCIe NAND.
Conguration options: [Disabled] [Enabled]
Aggressive LPM Support [Disabled]
This item is designed for LPM (link power management) support with a better energy saving
conditions. When disabled, the hot plug function of SATA ports are disabled.
Conguration options: [Disabled] [Enabled]
S.M.A.R.T. Status Check [On]
S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) is a monitoring system that
shows a warning message during POST (Power-on Self Test) when an error occurs in the
hard disks.
Conguration options: [On] [Off]
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Alternate ID [Disabled]
This item allows you to report the alternate device ID.
Conguration options: [Disabled] [Enabled]
SATA6G (SATA6G_1 - SATA6G_6)
These items allow you to assign a name of each SATA 6G connectors.
Hot Plug [Disabled] (SATA6G_1 - SATA6G_6)
These items allow you to enable/disable SATA Hot Plug Support. You can also assign
Conguration options: [Disabled] [Enabled]
2.6.4 System Agent Configuration
VT-D [Disabled]
This item allows you to enable or disable the Intel Virtualization Technology for Directed I/O.
Conguration options: [Disabled] [Enabled]
The following items appear only when you set VT-D item to [Enabled].
CPU Display Audio [Enabled]
This item allows you to enable or disable the CPU audio devices.
Conguration options: [Disabled] [Enabled]
DVI Port Audio [Off]
This item allows you to enable or disable the DVI port audio.
Conguration options: [Off] [On]
Graphics Configuration
This item allows you to select a primary display from CPU and PCIe graphical devices.
Primary Display [Auto]
This item allows you to select the primary display from CPU and PCIe devices.
This item allows you to control the Active State Power Management on both CPU and PCH
(platform controller hub) Both DMI link ASPM control items of the CPU and PCH sides must
be enabled for the ASPM to take effect.
This item allows you to switch off some power at S4+S5 or S5 to get the system ready for
ErP requirement. When set to [Enabled], all other PME options are switched off.
This item allows your system to go to ON state, OFF state, or both states after an AC power
loss. When setting your system to [Last State], it goes to the previous state before the AC
power loss.
The Monitor menu displays the system temperature/power status, and allows you to change
the fan settings.
Scroll down to display the other BIOS items.
2.7.1 Qfan Tuning
Click this item to automatically detect the lowest speed and congure the minimum duty cycle
for each fan.
2.7.2 CPU Temperature / MB Temperature / PCH Core
Temperature / SENSOR1 Temperature [xxx°C/xxx°F]
The onboard hardware monitor automatically detects and displays the CPU, motherboard,
PCH Core, and SENSOR1 temperatures. Select [Ignore] if you do not wish to display the
detected temperatures.
2.7.3 CPU Fan Speed [xxxx RPM] or [Ignore] / [N/A], CPU
Optional Fan Speed [xxxx RPM] or [Ignore] / [N/A],
Chassis Fan 1/4 Speed [xxxx RPM] or [Ignore] / [N/A]
The onboard hardware monitor automatically detects and displays the CPU, chassis,
and power fan speed in rotations per minute (RPM). If the fan is not connected to the
motherboard, the eld shows N/A. Select [Ignore] if you do not wish to display the detected
speed.
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