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Asus H81M-CR2.0 User Manual

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H81M-C R2.0

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  • Page 1 H81M-C R2.0...
  • Page 2 Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing.
  • Page 3: Table Of Contents

    My Favorites ..................2-10 Main menu ..................2-11 Ai Tweaker menu ................2-13 Advanced menu ................2-22 Monitor menu ..................2-30 Boot menu ..................2-33 Tools menu ..................2-38 2.10 Exit menu ................... 2-39 Appendices Notices ........................41 ASUS contact information .................43...
  • Page 4: Safety Information

    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.
  • Page 5: Conventions Used In This Guide

    Where to find more information Refer to the following sources for additional information and for product and software updates. ASUS websites The ASUS website provides updated information on ASUS hardware and software products. Refer to the ASUS contact information. Optional documentation Your product package may include optional documentation, such as warranty flyers, that may have been added by your dealer.
  • Page 6: Package Contents

    2 x DIMM, max. 16GB, DDR3 1600 / 1333 / 1066 MHz, non-ECC, un- buffered memory* Dual-channel memory architecture * Refer to www.asus.com for the latest Memory QVL (Qualified Vendors List). ** When you install a total memory of 4GB capacity or more, Windows ®...
  • Page 7 - ASUS ESD Guards - Enhanced ESD protection - ASUS High-Quality 5K-Hour Solid Capacitors - 2.5x long lifespan with excellent durability - ASUS Stainless Steel Back I/O - 3x more durable corrosion-resistant coating - ASUS GPU Boost - ASUS USB 3.0 Boost...
  • Page 8 BIOS features 64 Mb Flash ROM, UEFI BIOS, PnP, DMI v2.0, WfM2.0, SM BIOS v2.7, ACPI v2.0a, SLP3.0, EUP-ready Manageability WOL, PXE, PME Wake up Support DVD Drivers ASUS utilities EZ Update Anti-virus software (OEM version) Operating System Windows ®...
  • Page 9: Chapter 1: Product Introduction

    • 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. ASUS H81M-C R2.0...
  • Page 10: Motherboard Overview

    Motherboard overview Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits. 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 as indicated in the image. 1.2.2 Screw holes Place six 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.
  • Page 11: Motherboard Layout

    13 12 Connectors/Jumpers/Slots/LED Page ATX power connectors (24-pin ATXPWR, 4-pin ATX12V) 1-15 CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN) 1-18 Intel LGA1150 CPU socket ® DDR3 DIMM slots Intel H81 Serial ATA 3.0Gb/s connector (7-pin SATA3G_1~2) 1-17 ® Speaker connector (4-pin SPEAKER) 1-20 H81 Serial ATA 6.0Gb/s connector (7-pin SATA6G_1~2) 1-17 Intel ® System panel connector (10-1 pin F_PANEL) 1-20 Clear RTC RAM (3-pin CLRTC) 1-12 10. USB 2.0 connectors (10-1 pin USB910, USB1112) 1-19 11. TPM header (20-1 pin TPM) 1-16 12. Serial port connectors (10-1 pin COM) 1-19 13. Front panel audio connector (10-1 pin AAFP) 1-16 ASUS H81M-C R2.0...
  • Page 12: Central Processing Unit (Cpu)

    Central Processing Unit (CPU) This motherboard comes with a surface mount LGA1150 socket designed for the Intel 4th/5th ® generation Core™ i7 / Core™ i5 / Core™ i3, Pentium ® , and Celeron ® processors. H81M-C R2.0 H81M-C R2.0 CPU socket LGA1150 Unplug all power cables 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. Chapter 1: Product introduction...
  • Page 13 1.3.1 Installing the CPU ASUS H81M-C R2.0...
  • Page 14: Cpu Heatsink And Fan Assembly Installation

    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 Chapter 1: Product introduction...
  • Page 15: System Memory

    To uninstall the CPU heatsink and fan assembly System memory 1.4.1 Overview This motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Modules (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. Channel Sockets Channel A DIMM_A1 Channel B DIMM_B1 H81M-C R2.0 H81M-C R2.0 240-pin DDR3 DIMM sockets ASUS H81M-C R2.0...
  • Page 16: Memory Configurations

    1.4.2 Memory configurations You may install 1GB, 2GB, 4GB, and 8GB unbuffered non-ECC DDR3 DIMMs into the DIMM sockets. • 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 configuration. 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. • Memory module with memory frequency higher than 2133 MHz and its corresponding timing or the loaded XMP Profile is not the JEDEC memory standard. The stability and compatibility of these memory modules depend on the CPU's capabilities and other installed devices. • Due to Intel® chipset limitation, DDR3 1600 MHz and higher memory modules on XMP mode will run at the maximum transfer rate of DDR3 1600 MHz. OS, when you install • Due to the memory address limitation on 32-bit Windows ® 4GB 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 3GB system memory if you are using a 32-bit Windows...
  • Page 17: Installing A Dimm

    1.4.3 Installing a DIMM To install a DIMM To remove a DIMM ASUS H81M-C R2.0...
  • Page 18: Expansion Slots

    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: Before installing the expansion card, read the documentation that came with it and make the necessary hardware settings for the card. Remove the system unit cover (if your motherboard is already installed in a chassis).
  • Page 19 USB2.0 controller 2 – – – – – – – shared HD audio – – – – – – shared – SATA controller 1 – – – shared – – – – SATA controller 2 – – – shared – – – – ASUS H81M-C R2.0 1-11...
  • Page 20: Jumpers

    Jumpers Clear RTC RAM (3-pin CLRTC) 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. CLRTC H81M-C R2.0 Normal Clear RTC (Default) H81M-C R2.0 Clear RTC RAM To erase the RTC RAM: Turn OFF the computer and unplug the power cord. 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. Plug the power cord and turn ON the computer. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter data. Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default position. Removing the cap will cause system boot failure! •...
  • Page 21: Connectors

    100Mbps connection LAN port Orange (Blinking) Data activity GREEN 1Gbps connection Orange (Blinking Ready to wake up then steady) from S5 mode Line In port (light blue). This port connects to the tape, CD, DVD player, or other audio sources. Line Out port (lime). This port connects to a headphone or a speaker. In the 4.1, 5.1 and 7.1-channel configurations, the function of this port becomes Front Speaker Out. Microphone port (pink). This port connects to a microphone. Refer to the audio configuration table for the function of the audio ports in 2.1, 4.1, 5.1, or 7.1-channel configuration. ASUS H81M-C R2.0 1-13...
  • Page 22 Audio 2.1, 4.1, 5.1, or 7.1-channel configuration Headset Port 4.1-channel 5.1-channel 7.1-channel 2.1-channel Light Blue (Rear Line In Rear Speaker Out Rear Speaker Out Rear Speaker Out panel) Lime (Rear panel) Line Out Front Speaker Out Front Speaker Out Front Speaker Out Pink (Rear panel) Mic In Mic In Bass/Center Bass/Center Lime (Front panel) Side Speaker Out To configure a 7.1-channel audio output: • Use a chassis with HD audio module in the front panel to support a 7.1-channel audio output. USB 3.0 ports 1 and 2. These two 9-pin Universal Serial Bus (USB) ports are for USB 3.0 devices.
  • Page 23: Internal Connectors

    +3 Volts -12 Volts +3 Volts +3 Volts PIN 1 H81M-C R2.0 ATX power connectors • For a fully configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12V Specification 2.0 (or later version) and provides a minimum power of 350W. • DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will not boot up. • We recommend that you use a PSU with higher power output when configuring 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 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 H81M-C R2.0 1-15...
  • Page 24 TPM connector (20-1 pin TPM) This connector supports a Trusted Platform Module (TPM) system, which securely store keys, digital certificates, passwords and data. A TPM system also helps enhance network security, protect digital identities, and ensures platform integrity. PIN 1 H81M-C R2.0 H81M-C R2.0 TPM Connector The TPM module is purchased separately. 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. AAFP PIN 1 PIN 1 H81M-C R2.0 HD-audio-compliant Legacy AC’97 pin definition compliant definition H81M-C R2.0 Front panel audio connector...
  • Page 25 • You must install Windows. XP Service Pack 3 or later version before using Serial ATA hard disk drives. • 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. 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 H81M-C R2.0 H81M-C R2.0 SATA 3.0Gb/s connectors • You must install Windows. XP Service Pack 3 or later version before using Serial ATA hard disk drives. • When using hot-plug and NCQ, set the SATA Mode Selection item in the BIOS to [AHCI]. ASUS H81M-C R2.0 1-17...
  • Page 26 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 CHA_FAN H81M-C R2.0 H81M-C R2.0 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. These are not jumpers! Do not place jumper caps on the fan connectors! The CPU_FAN connector supports a CPU fan of maximum 1A (12 W) fan power. Only the 4-pin CPU fan supports the ASUS Fan Xpert 2 feature. Chapter 1: Product introduction 1-18...
  • Page 27 USB connectors comply with USB 2.0 specifications and supports up to 480Mbps connection speed. USB910 USB1112 H81M-C R2.0 PIN 1 PIN 1 H81M-C R2.0 USB2.0 connectors Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard! The USB 2.0 module is purchased separately. 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. PIN 1 H81M-C R2.0 H81M-C R2.0 Serial port connectors The COM module is purchased separately. ASUS H81M-C R2.0 1-19...
  • Page 28: System Panel Connector

    System panel connector (10-1 pin PANEL) This connector supports several chassis-mounted functions. F_PANEL +PWR LED PWR BTN PIN 1 H81M-C R2.0 +HDD_LED RESET H81M-C R2.0 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. • 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. • ATX power button/soft-off button (2-pin PWR_BTN) This connector is for the system power button.
  • Page 29: Software Support

    ® Vista Service Pack 1 or later versions before installing the drivers for better compatibility and system stability. 1.8.2 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. To run the Support DVD Place the Support DVD into the optical drive. If Autorun is enabled in your computer, the DVD automatically displays the Specials screen. Click Drivers, Utilities, Make Disk, Manual, and Contact tabs to display their respective menus. The following screen is for reference only. Click an icon to display Support DVD/ motherboard information...
  • Page 30 Chapter 1: Product introduction 1-22...
  • Page 31: Managing And Updating Your Bios

    Managing and updating your BIOS 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...
  • Page 32: Asus Ez Flash

    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.
  • Page 33: Asus Crashfree Bios 3 Utility

    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.
  • Page 34 Insert the DOS-bootable USB flash drive with the latest BIOS file and BIOS Updater to your computer’s USB port. Boot your computer. When the ASUS Logo appears, press <F8> to show the BIOS Boot Device Select Menu. Select the optical drive as the boot device. The DOS screen appears.
  • Page 35 Select Yes and press <Enter>. When BIOS update is done, press <ESC> 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 1.30 or later, the utility automatically exits to the DOS prompt after updating BIOS. • Ensure to load the BIOS default settings to ensure system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu. Refer to section 2.10 Exit menu for details. • Ensure to connect all SATA hard disk drives after updating the BIOS file if you have disconnected them. ASUS H81M-C R2.0...
  • Page 36: Bios Setup Program

    We recommend you always shut down the system properly from the operating system. • The BIOS setup screens shown in this section are for reference purposes only, and may not exactly match what you see on your screen. • Visit the ASUS website at www.asus.com to download the latest BIOS file 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. •...
  • Page 37: Advanced Mode

    The Boot Menu(F8) button is available only when the boot device is installed to the system. • Advanced Mode The Advanced Mode provides advanced options for experienced end-users to configure the BIOS settings. The figure below shows an example of the Advanced Mode. Refer to the following sections for the detailed configurations. To access the EZ Mode, click Exit, then select ASUS EZ Mode or press F7. ASUS H81M-C R2.0...
  • Page 38: Menu Bar

    Back button Menu items Menu bar Configuration fields General help Last modified settings Quick note Pop-up window Submenu item Navigation keys 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...
  • Page 39: Submenu Items

    This button allows you to enter 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 English letters to type your notes. Last Modified button This button shows the items that you last modified and saved in BIOS Setup. ASUS H81M-C R2.0...
  • Page 40: My Favorites

    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: 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 <F4> on your keyboard or right-click on your mouse to add the item to My Favorites page. You cannot add the following items to My Favorites: • Items with submenu options •...
  • Page 41: Main Menu

    BIOS password. See section 1.6 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. ASUS H81M-C R2.0 2-11...
  • Page 42: Administrator Password

    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: Select the Administrator Password item and press <Enter>.
  • Page 43: Ai Tweaker Menu

    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 CPU Graphics Speed : xxxxMHz Displays the target iGPU speed. ASUS H81M-C R2.0 2-13...
  • Page 44 2.5.1 CPU Core Ratio [Auto] Allows you to set the CPU core ratio automatically or manually. [Auto] Sets all CPU Core Ratio to Intel CPU default settings automatically. ® [Sync All Cores] Allows you to set CPU Core Ratio settings for all cores. [Per Core] Allows you to set CPU Core Ratio individually.
  • Page 45: Dram Timing Control

    Primary Timings DRAM CAS# Latency [Auto] Configuration options: [Auto] [1 DRAM Clock] – [31 DRAM Clock] DRAM RAS# to CAS# Delay [Auto] Configuration options: [Auto] [1 DRAM Clock] – [31 DRAM Clock] DRAM RAS# PRE Time [Auto] Configuration options: [Auto] [1 DRAM Clock] – [31 DRAM Clock] DRAM RAS# ACT Time [Auto] Configuration options: [Auto] [1 DRAM Clock] – [63 DRAM Clock] DRAM COMMAND Rate [Auto] Configuration options: [Auto] [1 DRAM Clock] [2 DRAM Clock] [3 DRAM Clock] ASUS H81M-C R2.0 2-15...
  • Page 46 Secondary Timings DRAM RAS# to RAS# Delay [Auto] Configuration options: [Auto] [1 DRAM Clock] – [15 DRAM Clock] DRAM REF Cycle Time [Auto] Configuration options: [Auto] [1 DRAM Clock] – [511 DRAM Clock] DRAM Refresh Interval [Auto] Configuration options: [Auto] [1 DRAM Clock] – [65535 DRAM Clock] DRAM WRITE Recovery Time [Auto] Configuration options: [Auto] [1 DRAM Clock] – [16 DRAM Clock] DRAM READ to PRE Time [Auto] Configuration options: [Auto] [1 DRAM Clock] – [15 DRAM Clock] DRAM FOUR ACT WIN Time [Auto] Configuration options: [Auto] [1 DRAM Clock] – [255 DRAM Clock] DRAM WRITE to READ Delay [Auto] Configuration options: [Auto] [1 DRAM Clock] – [15 DRAM Clock] DRAM CKE Minimum pulse width [Auto]...
  • Page 47: Cpu Power Management

    SpeedStep Technology [Enabled] ® Allows you to enable or disable the Enhanced Intel SpeedStep Technology (EIST). ® [Disabled] Disables this function. [Enabled] The operating system dynamically adjusts the processor voltage and core frequency which may result in decreased average consumption and decreased average heat production. ASUS H81M-C R2.0 2-17...
  • Page 48 Turbo Mode [Enabled] Allows you to enable your core processor’s speed to run faster than the marked frequency in a specific condition. Configuration options: [Disabled] [Enabled] • Turbo Mode is only available on selected CPU models only. • The following first three 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 long duration package power. Use the <+> and <-> keys to adjust the value.
  • Page 49 This item allows you to set the CPU cache voltage. Increase the cache voltage when increasing the ring frequency. Configuration options: [Auto] [Manual Mode] [Offset Mode]. 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] and allows you to set the offset mode sign. Configuration options: [+] [-] ASUS H81M-C R2.0 2-19...
  • Page 50 CPU Cache Voltage Offset [Auto] This item appears only when you set the CPU Cache Voltage to [Offset Mode] and allows you to set the CPU cache voltage offset. The values range from 0.001V to 0.999V with a 0.001V interval. 2.5.13 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. Offset Mode Sign [+] This item appears only when you set the CPU Graphics Voltage to [Offset Mode] or [Adaptive Mode] and allows you to set the offset mode sign.
  • Page 51 DRAM frequency. The values range from 0.001V to 0.999V with a 0.001V interval. 2.5.17 SVID Control [Auto] Disabling SVID Support stops the processor from commmunicating with the external voltage regulator. Configuration options: [Auto] [Disabled] [Enabled]. • We recommend that you disable this function when overclocking. • The following item appears only when you set SVID Support to [Enabled]. 2.5.18 DRAM Voltage [Auto] Allows you to set the DRAM Voltage. The values range from 1.500V to 1.650V with a 0.05V interval. According to Intel CPU specifications, DIMMs with voltage requirement over 1.65V may damage the CPU permanently. We recommend that you install the DIMMs with the voltage requirement below 1.65V. ASUS H81M-C R2.0 2-21...
  • Page 52: Advanced Menu

    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.
  • Page 53: Cpu Power Management Configuration

    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] ASUS H81M-C R2.0 2-23...
  • Page 54: Pch Configuration

    CPU C6 report [Enabled] Allows you to disable or enable the CPU C6 report to OS. Configuration options: [Enabled] [Disabled] C6 Latency [Short] Allows you to choose short or long latency for C6. Configuration options: [Short] [Long] CPU C7 report [CPU C7s] Allows you to disable or enable the CPU C7 report to OS.
  • Page 55: Sata Configuration

    POST. Configuration options: [Enabled] [Disabled] Hot Plug [Disabled] These items appear only when you set the SATA Mode Selection item to [AHCI] and allow you to enable/disable SATA Hot Plug Support. Configuration options: [Disabled] [Enabled] ASUS H81M-C R2.0 2-25...
  • Page 56: System Agent Configuration

    2.6.4 System Agent Configuration VT-d [Disabled] Allows you to enable or disable VT-d function on MCH. Configuration options: [Enabled] [Disabled] CPU Audio Device [Disabled] Allows you to enable or disable CPU SA Audio Device. Configuration options: [Enabled] [Disabled] 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.
  • Page 57: Memory Configuration

    [Enabled] [Disabled]. 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 guide for the locations of the USB ports. Configuration options: [Enabled] [Disabled]. ASUS H81M-C R2.0 2-27...
  • Page 58: Platform Misc Configuration

    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. Configuration options: [Disabled] [Enabled] Native ASPM [Disabled] The item appears only when you set the previous item to [Enabled] and allows you to enable or disable ASPM. Configuration options: [Enabled] [Disabled] 2.6.7 Onboard Devices Configuration HD Audio Controller [Enabled]...
  • Page 59 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. ASUS H81M-C R2.0 2-29...
  • Page 60: Monitor Menu

    2.6.9 Network Stack Configuration 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.
  • Page 61 Sets to [Silent] to minimize the fan speed for quiet CPU fan operation. [Turbo] Sets to [Turbo] to achieve maximum CPU fan speed. [Manual] Sets to [Manual] to assign detailed fan speed control parameters. The following four items appear only when you set CPU Fan Profile to [Manual]. CPU Upper Temperature [70] Use the <+> and <-> keys to adjust the upper limit of the CPU temperature. The values range from 20ºC to 75ºC. 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. ASUS H81M-C R2.0 2-31...
  • Page 62 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. Chassis Fan Speed Low Limit [600 RPM] This item appears only when you enable the Chassis Q-Fan Control feature and allows you to disable or set the chassis fan warning speed.
  • Page 63: Boot Menu

    [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. ASUS H81M-C R2.0 2-33...
  • Page 64 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.
  • Page 65 Allows you to select the type of devices that you want to boot up. Configuration options: [UEFI and Legacy OPROM] [Legacy OPROM only] [UEFI only] Boot from Network Devices [Legacy OPR...] Allows you to select the type of network devices that you want to launch. Configuration options: [Legacy OPROM first] [UEFI driver first] [Ignore] ASUS H81M-C R2.0 2-35...
  • Page 66: Secure Boot

    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] 2.8.9 Secure Boot...
  • Page 67: Dbx Management

    Append DBX from file Allows you to load the additional DBX from a storage device so that more db’s images cannot be loaded. The DBX file must be formatted as a UEFI variable structure with time-based authenticated variable. ASUS H81M-C R2.0 2-37...
  • Page 68: Tools Menu

    <Enter> to display the submenu. 2.9.1 ASUS EZ Flash 2 Utility 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.
  • Page 69: Exit Menu

    • We recommend that you update the BIOS file only coming from the same memory/CPU configuration and BIOS version. Load/Save CMOS Profile from/to USB Drive Allows you to load/save CMOS profile from/to USB drive. 2.9.3 ASUS SPD Information DIMM Slot Number [DIMM_A1] Displays the Serial Presence Detect (SPD) information of the DIMM module installed on the selected slot. Configuration options: [DIMM_A1] [DIMM_B1] 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.
  • Page 70 This option allows you to exit the Setup program without saving your changes. When you select this option or if you press <Esc>, a confirmation window appears. Select Yes to discard changes and exit. ASUS EZ Mode This option allows you to enter the EZ Mode screen. Launch EFI Shell from filesystem device This option allows you to attempt to launch the EFI Shell application (shellx64.efi) from one of the...
  • Page 71: Appendices

    Cet appareil est conforme aux normes CNR exemptes de licence d’Industrie Canada. Le fonctionnement est soumis aux deux conditions suivantes : (1) cet appareil ne doit pas provoquer d’interférences et (2) cet appareil doit accepter toute interférence, y compris celles susceptibles de provoquer un fonctionnement non souhaité de l’appareil. ASUS H81M-C R2.0...
  • Page 72: Canadian Department Of Communications Statement

    ASUS Recycling/Takeback Services ASUS recycling and takeback programs come from our commitment to the highest standards for protecting our environment. We believe in providing solutions for you to be able to responsibly recycle our products, batteries, other components as well as the packaging materials.
  • Page 73: Asus Contact Information

    +1-510-739-3777 +1-510-608-4555 Web site http://www.asus.com/us Technical Support Support fax +1-812-284-0883 General support +1-812-282-2787 Online support http://www.service.asus.com ASUS COMPUTER GmbH (Germany and Austria) Address Harkort Str. 21-23, D-40880 Ratingen, Germany +49-2102-959931 Web site http://www.asus.com/de Online contact http://eu-rma.asus.com/sales Technical Support Telephone +49-2102-5789555...
  • Page 74 Appendices...