Motherboard B85M-G
E8146 First Edition V1 May 2013 Copyright © 2013 ASUSTeK COMPUTER INC. All Rights Reserved. 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”).
Contents Safety information....................................................................................................... iv About this guide.......................................................................................................... iv Package contents........................................................................................................ vi B85M-G specifications summary...............................................................................
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.
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 flyers, that may have been added by your dealer. These documents are not part of the standard package.
Package contents Check your motherboard package for the following items. Motherboard ASUS B85M-G motherboard Cables 2 x Serial ATA 6.0 Gb/s cables Accessories 1 x I/O Shield Application DVD Support DVD Documentation User Guide If any of the above items is damaged or missing, contact your retailer. B85M-G specifications summary CPU LGA1150 socket for Intel® 4th Generation CoreTM i7/ i5 / i3, Pentium®, Celeron® Processors * Refer to www.asus.com for Intel® CPU support list.
B85M-G specifications summary LAN Realtek 8111G Gigabit LAN controller Audio 8-channel Realtek® ALC887-VD2 High Definition Audio CODEC - Supports multi-streaming * Use a chassis with HD audio module in the front panel to support an 8channel audio output. USB 4 x USB 3.0 ports (2 ports at midboard, 2 ports at back panel) 8 x USB 2.
B85M-G specifications summary Internal connectors 1 x USB 3.0 connector supports additional 2 USB 3.0 ports 2 x USB 2.0 connectors support additional 4 USB 2.0 ports 2 x SATA 3.0 Gb/s connectors 4 x SATA 6.
Product introduction 1.1 Before you proceed 1 Take note of the following precautions before you install motherboard components or change any motherboard settings. 1.2 • 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.
Place this side towards the rear of the chassis B85M-G 1.2.3 Motherboard layout 1 2 3 3 4 5 19.3cm(7.6in) CPU_FAN KBMS DVI_VGA DIGI +VRM BATTERY AUDIO PCIEX16 RTL 8111G B85M-G 64Mb BIOS PCIEX1_1 Super I/O Intel® B85 SB_PWR PCIEX1_2 ALC 887 COM SPDIF_OUT CHASSIS USBPWF LPT USB1112 USB1314 AAFP 19 1-2 23.4cm(9.
1.2.4 Layout contents Connectors/Jumpers/Slots/LED 1. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 2. Keyboard and USB device wakeup (KB_USBPWB) 3. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN) 4. Intel® LGA1150 CPU socket 5. DDR3 DIMM slots 6. USB 3.0 connector (20-1 pin USB3_12) 7. Onboard LED (SB_PWR) 8. Intel® B85 Serial ATA 6.0Gb/s connectors (7-pin SATA6G_1~4 [yellow]) 9. Clear RTC RAM (3-pin CLRTC) 10. Intel® B85 Serial ATA 3.0Gb/s connectors (7-pin SATA3G_1~2 [black]) 11.
Unplug all power cables before installing the CPU. 1.3.1 • 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.
4 5 C A B 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 2 A B B A 3 4 To uninstall the CPU heatsink and fan assembly 1 2 A B B A 1-6 Chapter 1: Product introduction
1.4 System memory 1.4.1 Overview DIMM_B1 DIMM_B2 DIMM_A1 DIMM_A2 This motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Module (DIMM) sockets. A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for better performance with less power consumption.
1.4.3 • 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.
Support the DIMM lightly with your fingers when pressing the retaining clips. The DIMM might get damaged when it flips out with extra force. 2. Remove the DIMM from the socket. 1.5 2 1 DIMM notch 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.
1.5.3 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 specifications. 1.5.4 PCI Express 3.0/2.0 x16 slot This motherboard supports PCI Express x16 network cards, SCSI cards, and other cards that comply with the PCI Express specifications.
Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default position. Removing the cap will cause system boot failure! 2. • If the steps above do not help, remove the onboard battery and move the jumper again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery. • You do not need to clear the RTC when the system hangs due to overclocking. For system failure due to overclocking, use the CPU Parameter Recall (C.P.R.) feature.
1.7 Connectors 1.7.1 Rear panel connectors 1 12 2 11 10 3 9 8 4 5 6 7 1. PS/2 mouse port (green). This port is for a PS/2 mouse. 2. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other VGA-compatible devices. 3. LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN) through a network hub.
Audio 2, 4, 6, or 8-channel configuration Port Light Blue (Rear panel) Lime (Rear panel) Pink (Rear panel) Lime (Front panel) Headset 2-channel Line In Line Out Mic In - 4-channel Rear Speaker Out Front Speaker Out Mic In - 6-channel Rear Speaker Out Front Speaker Out Bass/Center - 8-channel Rear Speaker Out Front Speaker Out Bass/Center Side Speaker Out To configure an 8-channel audio output: Use a chassis with HD audio module in the front panel to support an 8-channel audio output. 7. USB 2.
1.7.2 1. Internal connectors ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) These connectors are for ATX power supply plugs. The power supply plugs are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit.
3. Front panel audio connector (10-1 pin AAFP) NC AGND NC NC SENSE2_RETUR AGND NC SENSE1_RETUR 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.
5. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN) 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. CPU FAN PWM CPU FAN IN CPU FAN PWR GND CPU_FAN B85M-G CHA FAN PWM CHA FAN IN CHA FAN PWR GND CHA_FAN B85M-G Fan connectors Do not forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components.
7. Intel® B85 Serial ATA 3.0Gb/s connectors (7-pin SATA3G_1~2 [black]) These connectors connect to Serial ATA 3.0 Gb/s hard disk drives and optical drives via Serial ATA 3.0 Gb/s signal cables. SATA3G_2 GND RSATA_RXP2 RSATA_RXN2 GND RSATA_TXN2 RSATA_TXP2 GND B85M-G GND RSATA_RXP1 RSATA_RXN1 GND RSATA_TXN1 RSATA_TXP1 GND SATA3G_1 B85M-G Intel® SATA 3.0Gb/s connectors When using hot-plug and NCQ, set the SATA Mode Selection item in the BIOS to [AHCI]. See section 2.6.3 SATA Configuration for details.
9. 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 benefits of USB 3.0 including faster data transfer speeds of up to 5Gbps, faster charging time for USB-chargeable devices, optimized power efficiency, and backward compatibility with USB 2.0.
11. System panel connector (10-1 pin PANEL) This connector supports several chassis-mounted functions. F_PANEL PWR_LED+ PWR_LEDPWR GND PWR_LED PWR BTN HDD_LED+ HDD_LEDGround HWRST# (NC) PIN 1 B85M-G +HDD_LED RESET B85M-G System panel connector • System power LED (2-pin PWR_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.
13. Chassis intrusion connector (4-1 pin CHASSIS) This connector is for a chassis-mounted intrusion detection sensor or switch. Connect one end of the chassis intrusion sensor or switch cable to this connector. The chassis intrusion sensor or switch sends a high-level signal to this connector when a chassis component is removed or replaced. The signal is then generated as a chassis intrusion event. By default, the pin labeled “Chassis Signal” and “Ground” are shorted with a jumper cap.
1.9 1.9.1 Software support 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. 1.9.
BIOS information 2.1 Managing and updating your BIOS 2 Save a copy of the original motherboard BIOS file to a USB flash disk in case you need to restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update utility. 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.
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 file from the ASUS website at www.asus.com. To update the BIOS using EZ Flash 2: 2-2 1. Insert the USB flash disk that contains the latest BIOS file 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 to enable it. 3.
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 file when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS file using the motherboard support DVD or a USB flash drive that contains the updated BIOS file. • Before using this utility, rename the BIOS file in the removable device into B85MG.CAP. • The BIOS file in the support DVD may not be the latest version.
Booting the system to a DOS environment 1. Insert the USB flash drive with the latest BIOS file and BIOS Updater to the USB port. 2. Boot your computer. When the ASUS Logo appears, press to show the BIOS Boot Device Select Menu. Insert the support DVD into the optical drive and select the optical drive as the boot device. 3. When the Make Disk menu appears, select the FreeDOS command prompt item by pressing the item number. 4.
3. Press to switch between screen fields and use the keys to select the BIOS file and press . BIOS Updater checks the selected BIOS file and prompts you to confirm BIOS update. 4. Select Yes and press . When BIOS update is done, press to exit BIOS Updater. Restart your computer. DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure! • For BIOS Updater version 1.
2.2 BIOS setup program Use the BIOS Setup program to update the BIOS or configure 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 during the Power-On Self Test (POST). If you do not press , POST continues with its routines. Entering BIOS Setup after POST To enter BIOS Setup after POST: • Press ++ simultaneously.
Displays the CPU/motherboard temperature, CPU voltage output, and CPU/chassis fan speed Selects the Advanced mode functions Selects the boot device priority Power saving mode Selects the display language of the BIOS setup program Exits the BIOS setup program without saving the changes, saves the changes and resets the system, or enters the Advanced Mode Normal mode ASUS Optimal mode Displays the Advanced mode menus Selects the boot device priority Loads optimized default Displays the system properties
Back button Menu items Menu bar Configuration fields Pop-up window Submenu item General help Navigation keys Last modified settings Scroll bar Menu bar Quick note The menu bar on top of the screen has the following main items: My Favorites For saving the frequently-used system settings and configuration Main For changing the basic system configuration Ai Tweaker For changing the overclocking settings Advanced Boot For changing the advanced system settings For displaying the system temperatur
Pop-up window Select a menu item and press to display a pop-up window with the configuration options for that item. Scroll bar A scroll bar appears on the right side of a menu screen when there are items that do not fit on the screen. Press the Up/Down arrow keys or / keys to display the other items on the screen. Navigation keys At the bottom right corner of the menu screen are the navigation keys for the BIOS setup program.
Adding items to My Favorites To add frequently-used BIOS items to My Favorites: 1. Use the arrow keys to select an item that you want to add. When using a mouse, hover the pointer to the item. 2. Press on your keyboard or right-click on your mouse to add the item to My Favorites page.
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 fields in the BIOS setup program. To set an administrator password: • If you have forgotten your BIOS password, erase the CMOS Real Time Clock (RTC) RAM to clear the BIOS password. See section 1.6 Jumpers for information on how to erase the RTC RAM.
To clear the user password, follow the same steps as in changing a user password, but press when prompted to create/confirm the password. After you clear the password, the User Password item on top of the screen shows Not Installed. 2.5 Ai Tweaker menu The Ai Tweaker menu items allow you to configure overclocking-related items. Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect field values can cause the system to malfunction.
Scroll down to display the following items: Target CPU Turbo-Mode Speed : xxxxMHz Displays the target CPU Turbo-Mode speed. Target DRAM Speed : xxxxMHz Displays the target DRAM speed. Target Cache Speed : xxxxMHz Displays the target Cache speed. Target DMI/PEG Clock : xxxxMHz Displays the target DMI/PEG clock. Target iGPU Speed : xxxxMHz Displays the target iGPU speed. 2.5.1 Ai Overclock Tuner [Auto] Allows you to select the CPU overclocking options to achieve the desired CPU internal frequency.
The following two items appear only when you set the CPU Core Ratio to [Sync All Cores] or [Per Core]. 1-Core Ratio Limit [Auto] Select [Auto] to apply the CPU default Turbo Ratio setting or manually assign a 1-Core Limit value, which should be higher than or equal to the 2-Core Ratio Limit. 2-/3-/4-Core Ratio Limit [Auto] These items become configurable only when you set the CPU Core Ratio item to [Per Core]. 2.5.
2.5.11 DRAM Timing Control The subitems in this menu allow you to set the DRAM timing control features. Use the <+> and <-> keys to adjust the value. To restore the default setting, type [auto] using the keyboard and press the key. Changing the values in this menu may cause the system to become unstable! If this happens, revert to the default settings.
RTL IOL control DRAM RTL initial Value [Auto] Configuration options: [Auto] [1 DRAM Clock] – [63 DRAM Clock] DRAM RTL (CHA) [Auto] Configuration options: [Auto] [1 DRAM Clock] – [63 DRAM Clock] DRAM RTL (CHB) [Auto] Configuration options: [Auto] [1 DRAM Clock] – [63 DRAM Clock] DRAM IO-L (CHA) [Auto] Configuration options: [Auto] [Delay 1 Clock] - [Delay 15 Clock] DRAM IO-L (CHB) [Auto] Configuration options: [Auto] [Delay 1 Clock] - [Delay 15 Clock] Third Timings tRDRD [Auto] Configuration options: [Auto]
Allows you to enable or disable the MRC fast boot. Configuration options: [Auto] [Enabled] [Disabled] DRAM CLK Period [Auto] Configuration options: [Auto] [1] – [14] Channel A DIMM Control [Enable Bot...] Configuration options: [Enable Both DIMMS] [Disable DIMM0] [Disable DIMM1] [Disable Both DIMMS] Channel B DIMM Control [Enable Bot...] Configuration options: [Enable Both DIMMS] [Disable DIMM0] [Disable DIMM1] [Disable Both DIMMS] Scrambler Setting [Optimized ...
CPU Power Duty Control [T.Probe] DIGI + VRM Duty Control adjusts the current of every VRM phase and the thermal conditions of every component. [T. Probe] Select to maintain the VRM thermal balance. [Extreme] Select to maintain the current VRM balance. CPU Current Capability [Auto] Allows you to configure the total power range, and extends the overclocking frequency range simultaneously.
CPU Internal Power Switching Frequency Frequency Tuning Mode [Auto] Allows you to set the frequency tuning mode. Configuration options: [Auto] [+] [-] CPU Internal Power Fault Control Thermal Feedback [Auto] When enabled, it allows CPU to take precautionary actions when the thermal of the external regulator exceeds the limit.Configuration options: [Auto] [Disabled] [Enabled] CPU Integrated VR Fault Management [Auto] Allows you to manage the CPU Integrated VR fault.
Use the <+> and <-> keys to adjust the value. Power Saving Level 3 Threshhold [Auto] Allows you to set the power saving level 3 threshhold. Use the <+> and <-> keys to adjust the value. 2.5.14 Extreme OV [Disabled] By default, this item is set to [Disabled] and helps provide over voltage protection for the CPU. When you set this item to [Enabled], you can select voltage settings for overclocking, but this will not guarantee the CPU’s lifespan. 2.5.
CPU Cache Voltage Override [Auto] This item appears only when you set the CPU Cache Voltage to [Manual Mode] and allows you to set the CPU Cache voltage override. The values range from 0.001V to 1.920V with a 0.001V interval. Offset Mode Sign [+] This item appears only when you set the CPU Cache Voltage to [Offset Mode] or [Adaptive Mode] and allows you to set the offset mode sign.
Total Adaptive Mode CPU Graphics Voltage [Auto] This item appears only when you set the CPU Graphics Voltage to [Adaptive Mode] and allows you to set the total adaptive mode CPU graphics voltage. The values range from 0.001V to 1.920V with a 0.001V interval. 2.5.18 CPU System Agent Voltage Offset Mode Sign [+] This item allows you to set the CPU system agent voltage offset mode sign. Configuration options: [+] [-].
2.5.25 PCH Voltage [Auto] Allows you to set the Platform Controller Hub voltage. Use the <+> or <-> keys to adjust the value. Configuration options: [Auto] [+0.10V]. The system may need better cooling system to work stably under high voltage settings. 2.5.26 DRAM CTRL REF Voltage [Auto] Allows you to set the DRAM CTRL REF Voltage. The values range from 0.3950x to 0.6300x with a 0.0050x interval. 2.5.27 DRAM DATA REF Voltage on CHA [Auto] Allows you to set the DRAM DATA REF Voltage on CHA.
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] [Enabled] Enables the overheated CPU to throttle its clock speed to cool down. [Disabled] Disables the CPU thermal monitor function.
Boot performance mode [Max Non-Tu...] This item allows you to select the boot performance mode. Configuration options: [Max NonTurbo Performance] [Max battery] [Turbo Performance] CPU Power Management Configuration This item allows you to manage and configure the CPU’s power. Enhanced Intel® SpeedStep Technology [Enabled] Allows you to enable or disable the Enhanced Intel® SpeedStep Technology (EIST). [Disabled] The CPU runs at its default speed. [Enabled] The operating system controls the CPU speed.
2.6.2 PCH Configuration PCI Express Configuration DMI Link ASPM Control [Auto] Allows you to control the Active State Power Managemennt on both NB and SB side of the DMI Link. Configuration options: [Auto] [Enabled] [Disabled] ASPM Support [Disabled] Allows you to set the ASPM support. Configuration options: [Disabled] [Auto] [L0s] [L1] L0sL1]. PCIe Speed [Auto] Allows you to select the PCI Express port speed.
2.6.3 SATA 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] Allows you to set the SATA configuration. [Disabled] Disables the SATA function. [IDE] Set to [IDE] when you want to use the Serial ATA hard disk drives as Parallel ATA physical storage devices.
Graphics Configuration Allows you to select a primary display from iGPU, and PCIe graphical devices. Primary Display [Auto] Allows you to select which of the iGPU/PCIE Graphics device should be the Primary Display. Configuration options: [Auto] [IGPU] [PCIE] iGPU Memory [Auto] Allows you to select the amount of system memory allocated to DVMT 5.0 used by the iGPU.
2.6.5 USB Configuration The items in this menu allow you to change the USB-related features. The USB Devices item shows the auto-detected values. If no USB device is detected, the item shows None. Legacy USB Support [Enabled] [Enabled] Enables the support for USB devices on legacy operating systems (OS). [Disabled] The USB devices can be used only for the BIOS setup program. [Auto] Allows the system to detect the presence of USB devices at startup.
2.6.7 Onboard Devices Configuration HD Audio Controller [Enabled] [Enabled] Enables the HD Audio Device. [Disabled] Disables the HD Audio Device. The following item appears only when you set the HD Audio Controller item to [Enabled]. Front Panel Type [HD] Allows you to set the front panel audio connector (AAFP) mode to legacy AC’97 or highdefinition audio depending on the audio standard that the front panel audio module supports.
Change Settings [Auto] Allows you to select an optimal setting for Super I/O devices. Configuration options: [Auto] [IO=378h; IRQ=5;] [IO=378h; IRQ=5,6,7,9,10,11,12;] [IO=278h; IRQ=5,6,7,9,10,11,12;] [IO=3BCh; IRQ=5,6,7,9,10,11,12;] Device Mode [STD Printe...] Allows you to select the Printer Port mode. Configuration options: [STD Printer Mode] [SPP Mode] [EPP-1.9 and SPP Mode] [EPP-1.7 and SPP Mode] [ECP Mode] [ECP and EPP 1.9 Mode] [ECP and EPP 1.7 Mode] 2.6.
2.6.9 Network Stack Network Stack [Disabled] This item allows user to disable or enable the UEFI network stack. Configuration options: [Disabled] [Enabled] The following two items appear only when you set the previous item to [Enabled]. Ipv4 PXE Support [Enabled] This item allows user to disable or enable the Ipv4 PXE Boot support. Configuration options: [Disabled] [Enabled] Ipv6 PXE Support [Enabled] This item allows user to disable or enable the Ipv6 PXE Boot support.
2.7.1 CPU Temperature [xxxºC/xxxºF] The onboard hardware monitor automatically detects and displays the CPU temperature. Select Ignore if you do not wish to display the detected temperature. 2.7.2 CPU / Chassis Fan Speed [xxxx RPM] or [Ignore] / [N/A] The onboard hardware monitor automatically detects and displays the CPU / chassis fan speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the field shows N/A.
CPU Lower Temperature [20] Displays the lower limit of the CPU temperature. CPU Fan Min. Duty Cycle(%) [20] Use the <+> and <-> keys to adjust the minimum CPU fan duty cycle. The values range from 20% to 100%. When the CPU temperature is under the lower limit, the CPU fan will operate at the minimum duty cycle. 2.7.5 Chassis Q-Fan Control [Enabled] [Disabled] Disables the Chassis Q-Fan control feature. [Enabled] Enables the Chassis Q-Fan control feature.
2.8 Boot menu The Boot menu items allow you to change the system boot options. Scroll down to display the following items: 2.8.1 Fast Boot [Enabled] [Enabled] Select to accelerate the boot speed. [Disabled] Select to go back to normal boot. The following four items appear when you set Fast Boot to [Enabled]. USB Support [Partial Initialization] [Disabled] All USB devices will not be available until OS boot up for a fastest POST time.
PS/2 Keyboard and Mouse Support [Auto] Select any of these settings when PS/2 keyboard and mouse are installed. These settings only apply when Fast Boot is enabled. [Auto] For a faster POST time, PS/2 devices will only be available when the system boots up or rebooted when the PS/2 devices have not been reconnected or changed. If you disconnect or change PS/2 devices before restarting the system, PS/2 devices will not be available and BIOS setup program will not be accessible via PS/2 devices.
[Off] 2.8.4 Sets the power-on state of the NumLock to [Off]. Wait for ‘F1’ If Error [Enabled] When this item is set to [Enabled], the system waits for the F1 key to be pressed when error occurs. Configuration options: [Disabled] [Enabled] 2.8.5 Option ROM Messages [Force BIOS] [Force BIOS] The third-party ROM messages will be forced to display during the boot sequence.
Boot from PCIe/PCI Expansion Devices [Legacy OpROM first] Allows you to select the type of PCIe/PCI expansion devices that you want to launch. Configuration options: [Legacy OpROM first] [UEFI driver first] 2.8.9 Secure Boot Allows you to configure the Windows® Secure Boot settings and manage its keys to protect the system from unauthorized access and malwares during POST. OS Type [Windows UE...] Allows you to select your installed operating system.
KEK Management The KEK (Key-exchange Key or Key Enrollment Key) manages the Signature database (db) and Revoked Signature database (dbx). Key-exchange Key (KEK) refers to Microsoft® Secure Boot Key-Enrollment Key (KEK). Delete the KEK Allows you to delete the KEK from your system. Configuration options: [Yes] [No] Load KEK from File Allows you to load the downloaded KEK from a USB storage device.
2.8.10 Boot Option Priorities These items specify the boot device priority sequence from the available devices. The number of device items that appears on the screen depends on the number of devices installed in the system. • • 2.8.11 To select the boot device during system startup, press when ASUS Logo appears. To access Windows OS in Safe Mode, do any of the following: • Press when ASUS Logo appears. • Press after POST.
2.9 Tools menu 2.9.1 ASUS EZ Flash 2 Utility The Tools menu items allow you to configure options for special functions. Select an item then press to display the submenu. Allows you to run ASUS EZ Flash 2. Press [Enter] to launch the ASUS EZ Flash 2 screen. For more details, see section 2.1.2 ASUS EZ Flash 2. 2.9.2 ASUS O.C. Profile This item allows you to store or load multiple BIOS settings. The Setup Profile Status items show Not Installed if no profile is created.
2.10 Exit menu The Exit menu items allow you to load the optimal default values for the BIOS items, and save or discard your changes to the BIOS items. You can access the EZ Mode from the Exit menu. Load Optimized Defaults This option allows you to load the default values for each of the parameters on the Setup menus. When you select this option or if you press , a confirmation window appears. Select Yes to load the default values.
Appendices Notices Federal Communications Commission Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: • This device may not cause harmful interference. • This device must accept any interference received including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
Canadian Department of Communications Statement This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. This class B digital apparatus complies with Canadian ICES-003.
ASUS contact information ASUSTeK COMPUTER INC. Address Telephone Fax E-mail Web site Technical Support Telephone Online support 15 Li-Te Road, Peitou, Taipei, Taiwan 11259 +886-2-2894-3447 +886-2-2890-7798 info@asus.com.tw www.asus.com.tw +86-21-38429911 support.asus.
A-4 Appendices (510)739-3777/(510)608-4555 800 Corporate Way, Fremont, CA 94539. Asus Computer International Signature : Date : Representative Person’s Name : Apr. 29, 2013 Steve Chang / President This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
