E8451_H81-PLUS_Manual.
E8451 First Edition V1 July 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 H81-PLUS specifications summary........................................................... vi Product introduction 1.1 Before you proceed.....................................
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 H81-PLUS 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. H81-PLUS specifications summary CPU LGA1150 socket for 4th Generation Intel® CoreTM i7/i5/i3, Pentium®, Celeron® Processors Supports Intel® 22nm CPU Supports Intel® Turbo Boost Technology 2.
H81-PLUS specifications summary Audio Realtek® ALC887 8-channel Audio CODEC LAN Realtek 8111G Gigabit LAN controller USB Intel® H81 Express Chipset - supports ASUS USB 3.0 Boost - 2 x USB 3.0/2.0 ports at mid-board for front panel support * Use a chassis with HD audio module in the front panel to support an 8-channel audio output. Intel® H81 Express Chipset - 8 x USB 2.0/1.
H81-PLUS specifications summary Rear panel I/O ports 1 x PS/2 keyboard port (purple) 1 x PS/2 mouse port (green) 1 x RGB port 1 x LAN (RJ-45) port 2 x USB 3.0/2.0 ports (blue) 2 x USB 2.0/1.1 ports 1 x COM port 1 x LPT port 3 x Audio jacks support 8-channel audio output Internal connectors/ switches/ buttons 3 x USB 2.0/1.1 connectors support additional 6 USB 2.0 ports 2 x SATA 6.0 Gb/s connectors 2 x SATA 3.
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. • Hold components by the edges to avoid touching the ICs on them.
Place this side towards the rear of the chassis 1.2.3 H81-PLUS Motherboard layout 1 2 3 4 2 5 18.8cm(7.4in) CPU_FAN KBMS ASM 1083 CHA_FAN AUDIO EATXPWR LAN_USB34 BATTERY 30.5cm(12.
1.2.4 Layout contents Connectors/Jumpers/Slots/LED 1. Keyboard and USB device wakeup (KB_USBPWB) 2. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN) 3. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 4. Intel® LGA1150 CPU socket 5. DDR3 DIMM slots 6. Clear RTC RAM (3-pin CLRTC) 7. Intel® H81 Serial ATA 6.0Gb/s connector (7-pin SATA6G_1~2 [yellow]) 8. Intel® H81 Serial ATA 3.0Gb/s connector (7-pin SATA3G_1~2 [dark brown]) 9. System panel connector (20-8 pin F_PANEL) 10.
Unplug all power cables before installing the CPU. 1.3.1 • Ensure that you install the correct CPU designed for the LGA1150 socket only. DO NOT install a CPU designed for LGA1155 and LGA1156 sockets on the LGA1150 socket. • 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.
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. ASUS H81-PLUS E8451_H81-PLUS_Manual.
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 E8451_H81-PLUS_Manual.
1.4 System memory 1.4.1 Overview This motherboard comes with two 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. DIMM_A1 DIMM_B1 According to Intel® CPU spec, DIMM voltage below 1.65V is recommended to protect the CPU. Channel Channel A Channel B Sockets DIMM_A1 DIMM_B1 H81-PLUS H81-PLUS 240-pin DDR3 DIMM sockets 1.4.
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 1 1 DIMM notch 2. Remove the DIMM from the socket. 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.
1.5.3 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 x16 slot This motherboard supports PCI Express x16 network cards, SCSI cards, and other cards that comply with the PCI Express specifications. 1.5.5 PCI slots The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that comply with PCI specifications.
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 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! 2.
3. Keyboard and USB device wake-up (KB_USBPWB) This jumper allows you to enable or disable the keyboard and rear USB ports wakeup feature. When you set this jumper to pins 2-3 (+5VSB), you can wake up the computer by pressing a key on the USB keyboard or using a USB device. This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS. 1 2 2 3 KB_USBPWB +5V H81-PLUS +5VSB (Default) H81-PLUS Keyboard and USB device wake up 1.
4. Line In port (light blue). This port connects to the tape, CD, DVD player, or other audio sources. 5. Line Out port (lime). This port connects to a headphone or a speaker. In the 4, 6 and 8-channel configurations, the function of this port becomes Front Speaker Out. 6. Microphone port (pink). This port connects to a microphone. Refer to the audio configuration table for the function of the audio ports in 2, 4, 6, or 8channel configuration.
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. Intel® H81 Serial ATA 3.0Gb/s connector (7-pin SATA3G_1~2) This connector connects to Serial ATA 3.0 Gb/s hard disk drives via Serial ATA 3.0 Gb/s signal cables. SATA3G_1 SATA3G_2 GND RSATA_TXP1 RSATA_TXN1 GND RSATA_RXN1 RSATA_RXP1 GND GND RSATA_TXP22 RSATA_TXN2 GND RSATA_RXN2 RSATA_RXP2 GND H81-PLUS H81-PLUS SATA 3.0Gb/s connectors When using hot-plug and NCQ, set the SATA Mode Selection item in the BIOS to [AHCI]. 6.
7. USB 2.0 connectors (10-1 pin USB56, USB910, USB1112) 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 specifications and supports up to 480Mbps connection speed.
• 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. • Hard disk drive activity LED (2-pin HDD_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 flashes when data is read from or written to the HDD.
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.
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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. With this utlity, you can also manually update the saved BIOS and select a boot logo when the system goes into POST.
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: 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 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 H81PL.CAP. • The BIOS file in the support DVD may not be the latest version.
Booting the system to a DOS environment 1. Insert the DOS-bootable USB flash drive with the latest BIOS file and BIOS Updater to your computer’s USB port. 2. Boot your computer. When the ASUS Logo appears, press to show the BIOS Boot Device Select Menu. 3. Select the USB flash drive as the boot device. The DOS screen appears. Updating the BIOS file To update the BIOS file using BIOS Updater: 1. At the FreeDOS prompt, type bupdater /pc /g and press . 2.
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.
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 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 2.
Back button Menu items Menu bar Configuration fields Pop-up window Submenu item General help Navigation keys Last modified settings Quick note Scroll bar Menu bar 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 temperature
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.
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 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.
2.4 Main menu 2.4.1 System Language [English] 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. Allows you to choose the BIOS language version from the options. Configuration options: [English] [Español] [Русский] [한국어] 2.4.2 System Date [Day xx/xx/xxxx] Allows you to set the system date. 2.4.
3. Confirm the password when prompted. To change an administrator password: 1. Select the Administrator Password item and press . 2. From the Enter Current Password box, key in the current password, then press . 3. From the Create New Password box, key in a new password, then press . 4. Confirm the password when prompted.
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. The configuration options for this section vary depending on the CPU and DIMM model you installed on the motherboard. Scroll down to display the following items: ASUS H81-PLUS E8451_H81-PLUS_Manual.
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.
2-Core Ratio Limit [Auto] This item becomes configurable only when you set CPU Core Ratio to [Per Core] and allows you to set the 2-Core Ratio Limit. Select [Auto] to apply the CPU default Turbo Ratio setting or manually assign a 2-Core Ratio Limit value that is higher than or equal to the 3-Core Ratio Limit. 1-Core Limit must not be set to [Auto]. 3-Core Ratio Limit [Auto] This item becomes configurable only when you set CPU Core Ratio to [Per Core] and allows you to set the 3-Core Ratio Limit.
2.5.9 EPU Power Saving Mode [Disabled] Allows you to enable or disable the EPU power saving function. Configuration options: [Disabled] [Enabled] 2.5.10 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.
DRAM CAS# Write Latency [Auto] Configuration options: [Auto] [1 DRAM Clock] – [31 DRAM Clock] 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 I0-L (CHA) [Auto] Configuration options: [Auto] [Delay 1 Clock] - [Delay 15 Clock] DRAM IO-L (CHB) [Auto] Configuration options: [Aut
MISC MRC Fast Boot [Enabled] Allows you to enable or disable the MRC fast boot. [Enabled] Enables the MRC fast boot. [Disable] Disables the MRC fast boot. 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...
Manual Adjustment [Fast] Allows you to set a response for the CPU power phase control. Configuration options: [Ultra Fast] [Fast] [Medium] [Regular] 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 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.
Power Saving Level 3 Threshhold [Auto] Allows you to set the power saving level 3 threshhold. Use the <+> and <-> keys to adjust the value. 2.5.13 Extreme Over - voltage [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.
2.5.16 CPU Graphics Voltage [Auto] This item allows you to set the CPU graphics voltage. Increase the graphics voltage when increasing the iGPU frequency. Configuration options: [Auto] [Manual Mode] [Offset Mode] [Adaptive Mode]. CPU Graphics Voltage Override [Auto] This item appears only when you set the CPU Graphics Voltage to [Manual Mode] and allows you to set the CPU graphics voltage override. The values range from 0.001V to 1.920V with a 0.001V interval.
2.5.19 CPU Digital I/O Voltage Offset Mode Sign [+] This item allows you to set the CPU digital I/O voltage offset mode sign. Configuration options: [+] [-]. CPU Digital I/O Voltage Offset [Auto] This item allows you to set the CPU digital I/O voltage offset. Increase the value when increasing DRAM frequency. The values range from 0.001V to 0.999V with a 0.001V interval. 2.5.20 SVID Support [Auto] Disabling SVID Support stops the processor from commmunicating with the external voltage regulator.
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 field values can cause the system to malfunction. 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.
Limit CPUID Maximum [Disabled] [Enabled] Allows legacy operating systems to boot even without support for CPUs with extended CPUID functions. [Disabled] Disables this function. Execute Disable Bit [Enabled] [Enabled] Enables the No-Execution Page Protection Technology. [Disabled] Forces the XD feature flag to always return to zero (0).
The following items appear only when you set the CPU C states to [Enabled]. Enhanced C1 state [Enabled] [Enabled] Enables enhanced C1 state. [Disabled] Disables enhanced C1 state. CPU C3 Report [Enabled] Allows you to disable or enable the CPU C3 report to OS. ����������������������� Configuration options: [Enabled] [Disabled] CPU C6 report [Enabled] Allows you to disable or enable the CPU C6 report to OS.
Entry on S3 RTC Wake [Enabled] The system automatically wakes up and set to Rapid Start Technology S4 mode. Configuration options: [Enabled] [Disabled] Entry After [x] Allows you to set the wake-up time.The values range from 0 (immediately) to 120. Active Page Threshold Support [Enabled] The system automatically set itself to sleep when the partition size is not enough for Rapid Start Technology to work.
IDE Legacy / Native Mode Selection [Native] This item appears only when you set the SATA Mode Selection item to [IDE]. Configuration options: [Native] [Legacy] S.M.A.R.T. Status Check [Enabled] S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) is a monitor system. When read/write of your hard disk errors occur, this feature allows the hard disk to report warning messages during the POST.
DMI Link ASPM Control [Auto] Allows you to enable or disable the control of Active State Power Management on SA side of the DMI Link. Configuration options: [Auto] [Disabled] [L0s] [L1] [L0sL1] PEG - ASPM [Disabled] Allows you to control ASPM support for the PEG Device. The setting takes no effect if PEG is not the active device at present.
USB_3~6, 9~12 [Enabled] Allows you to enable or disable an individual USB port. Refer to the section 1.2.3 Motherboard layout in this user manual for the locations of the USB ports. Configuration options: [Enabled] [Disabled]. 2.6.6 Platform Misc Configuration The items in this menu allow you to configure the Platform Misc. PCI Express Native Power Management [Disabled] Allows you to enhance the power saving feature of PCI Express and perform ASPM operations in the operating system.
Change Settings [IO=3F8h; IRQ=4] This item appears only when you set the Serial Port to [Enabled] and allows you to select the Serial Port base address. Configuration options: [IO=3F8h; IRQ=4] [IO=2F8h; IRQ=3] [IO=3E8h; IRQ=4] [IO=2E8h; IRQ=3] Parallel Port Configuration The sub-items in this menu allow you to set the parallel port configuration. Parallel Port [Enabled] Allows you to enable or disable the parallel port (LPT/LPTE).
[Enabled] Enables the PCIE/PCI devices to generate a wake-on-LAN feature of the Intel®/Realtek LAN device. Power On By Ring [Disabled] [Disabled] Disables Ring to generate a wake event. [Enabled] Enables Ring to generate a wake event. Power On By RTC [Disabled] [Disabled] Disables RTC to generate a wake event. [Enabled] When set to [Enabled], the items RTC Alarm Date (Days) and Hour/ Minute/Second will become user-configurable with set values. 2.6.
Scroll down to display the following items: 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 Fan Max. Duty Cycle(%) [100] Use the <+> and <-> keys to adjust the maximum CPU fan duty cycle. The values range from 20% to 100%. When the CPU temperature reaches the upper limit, the CPU fan will operate at the maximum duty cycle. 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%.
2.7.6 Anti Surge Support [Enabled] This item allows you to enable or disable the Anti Surge function. Configuration options: [Disabled] [Enabled] 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 five items appear when you set Fast Boot to [Enabled].
USB Support [Partial In...] [Disabled] All USB devices will not be available until OS boot up for a fastest POST time. [Full Initialization] All USB devices will be available during POST. This process will extend the POST time. [Partial Initialization] For a faster POST time, only the USB ports with keyboard and mouse connections will be detected. PS/2 Keyboard and Mouse Support [Auto] Select any of these settings when PS/2 keyboard and mouse are installed.
2.8.3 Bootup NumLock State [On] [On] Sets the power-on state of the NumLock to [On]. [Off] Sets the power-on state of the NumLock to [Off]. 2.8.4 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 Storage Devices [Legacy OpR...] Allows you to select the type of storage devices that you want to launch. Configuration options: [Both, Legacy OpROM first] [Both, UEFI first] [Legacy OpROM first] [UEFI driver first] [Ignore] Boot from PCI-E/PCI Expansion Devices [Legacy OpR...] 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.
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. Boot Override These items displays the available devices.
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 E8451_H81-PLUS_Manual.indb 4 Appendices 7/12/13 3:04:24 PM (510)739-3777/(510)608-4555 800 Corporate Way, Fremont, CA 94539. Asus Computer International Date : Signature : Representative Person’s Name : Jun. 21, 2013 Steve Chang / President This device complies with part 15 of the FCC Rules.
