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Motherboard P8B75-M LE P8B75-M LE PLUS.
ii E7436 Second Edition (V2) September 2012 Copyright © 2012 ASUST eK COMPUTER INC. All Rights Reserved. No part of this manual, including the products and software described in it, may be reproduced.
iii Contents Safety information ...................................................................................... vi About this guide ......................................................................................... vi P8B75-M LE Series specications summary .
iv Contents 1.12 Onboard LEDs ............................................................................ 1-32 1.13 Software support ........................................................................ 1-33 1.13.1 Installing an operating system .
v Contents 2.5.2 PCH Conguration ........................................................ 2-18 2.5.3 SA T A Conguration ....................................................... 2-19 2.5.4 System Agent Conguration ..............................
vi Safety information Electrical safety • T o prevent electric shock hazard, disconnect the power cable from the electric 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.
vii Conventions used in this guide T o ensure that you perform certain tasks properly , take note of the following symbols used throughout this manual. DANGER/W ARNING: Information to prevent injury to yourself when trying to complete a task. CAUTION: Information to prevent damage to the components when trying to complete a task.
viii P8B75-M LE Series specications summary (continued on the next page) CPU LGA1 155 socket for Intel ® 2nd / 3rd Generation Core™ i7 / Core™ i5 / Core™ i3 / Pentium ® / Celeron ® processors Supports Intel 22/32nm CPU Supports Intel ® T urbo Boost T echnology 2.
ix P8B75-M LE Series specications summary ASUS unique features ASUS Exclusive Features: - ASUS EPU - ASUS GPU Boost - ASUS USB 3.0 Boost - Network iControl - MemOK! - ASUS AI Suite II - Ai Charger .
x * Specications are subject to change without notice. BIOS features 128 Mb Flash ROM, AMI BIOS, PnP , DMI2.0, WfM2.0, SM BIOS 2.5, ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS 3 Manageability WfM 2.0, DMI 2.0, WOL by PME, WOR by PME, PXE Accessories 1 x Serial A T A 3.
ASUS P8B75-M LE Series 1-1 Chapter 1 Product introduction Motherboard ASUS P8B75-M LE Series motherboard Cables 1 x Serial A T A 6.0Gb/s cable 1 x Serial A T A 3.0Gb/s cable Accessories 1 x I/O shield Application DVD ASUS motherboard support DVD Documentation User Manual If any of the above items is damaged or missing, contact your retailer .
1-2 Chapter 1: Product introduction Intel ® B75 Express Chipset The Intel ® B75 Express Chipset is the latest single-chipset designed to support the 1 155 socket Intel ® 3rd/2nd generation Core™ i7 / Core™ i5 / Core™ i3 processors.
ASUS P8B75-M LE Series 1-3 1.3.2 Innovative ASUS features ASUS UEFI BIOS Flexible and Easy BIOS Interface ASUS UEFI BIOS offers the rst mouse-controlled graphical BIOS designed with selectable modes, providing a user-friendly interface that goes beyond the traditional keyboard-only controls.
1-4 Chapter 1: Product introduction MemOK! MemOK! quickly ensures memory boot compatibility . This remarkable memory rescue tool requires a mere push of the button to patch memory issues. MemOK! determines failsafe settings and dramatically improves your system boot success.
ASUS P8B75-M LE Series 1-5 1.4 Before you proceed T ake note of the following precautions before you install motherboard components or change any motherboard settings.
1-6 Chapter 1: Product introduction P8B75-M LE 1.5 Motherboard overview Before you install the motherboard, study the conguration of your chassis to ensure that the motherboard ts into it. Ensure that you unplug the power cord before installing or removing the motherboard.
ASUS P8B75-M LE Series 1-7 1.5.3 Motherboard layout P8B75-M LE PLUS P8B75-M LE PLUS PCIEX16_1 PCIEX16_2 PCI2 PCI1 AAFP EATXPWR CPU_FAN CHA_FAN Lithium Cell CMOS Power Super I/O VIA VT1708S DIGI +VRM ATX12V KBMS 64Mb BIOS 64Mb BIOS CLRTC 20.3cm(8.0in) 24.
1-8 Chapter 1: Product introduction 1.5.4 Layout contents Connectors/Jumpers/Slots/LED Pa ge Connectors/Jumpers/Slots/LED Page 1. CPU and chassis fan connectors (4-pin CPU_F AN, 3-pin CHA_FAN) 1-27 10. Intel ® B75 Serial AT A 6.0Gb/s connectors (7-pin SA T A6G_1 [gray]) 1-29 2.
ASUS P8B75-M LE Series 1-9 1.6 Central Processing Unit (CPU) The motherboard comes with a surface mount LGA1 155 socket designed for the Intel ® 3rd/2nd generation Core™ i7 / Core™ i5 / Core™ i3 processors. Unplug all power cables before installing the CPU.
1-10 Chapter 1: Product introduction 1.6.1 Installing the CPU 1 2 3 The LGA1 156 CPU is incompatible with the LGA1 155 socket. DO NOT install a LGA1 156 CPU on the LGA1 155 socket.
ASUS P8B75-M LE Series 1-1 1 A B C 5 4.
1-12 Chapter 1: Product introduction 1.6.2 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 P8B75-M LE Series 1-13 A B B A T o uninstall the CPU heatsink and fan assembly 2 1.
1-14 Chapter 1: Product introduction P8B75-M LE P8B75-M LE 240-pin DDR3 DIMM sockets DIMM_A1 DIMM_B1 1.7 System memory 1.7.1 Overview The motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Modules (DIMM) sockets.
ASUS P8B75-M LE Series 1-15 P8B75-M LE Series Motherboard Qualied V endors Lists (QVL) DDR3-2400 MHz capability V endors Part No. Size SS/ DS Chip Brand Chip NO. Timing V oltage DIMM socket support (Optional) 1 DIMM 2 DIMMs CORSAIR CMGTX8(XMP) 8GB (2GBx 4) SS - - 10-12-10-27 1.
1-16 Chapter 1: Product introduction V endors Part No. Size SS/ DS Chip Brand Chip NO. T iming V oltage DIMM socket support (Optional) 1 DIMM 2 DIMMs A-DA TA AM2U16BC2P1 2GB SS A-DA TA 3CCD-1509A EL1 126T - - • • A-DA TA AD31600E001GM(O)U3K 3GB(3 x 1GB) SS - - 8-8-8-24 1.
ASUS P8B75-M LE Series 1-17 DDR3-1333 MHz capability V endors Part No. Size SS/ DS Chip Brand Chip NO. T iming V oltage DIMM socket support (Optional) 1 DIMM 2 DIMMs A-DA TA AD31333001GOU 1GB SS A-Dat.
1-18 Chapter 1: Product introduction V endors Part No. Size SS/ DS Chip Brand Chip NO. T iming V oltage DIMM socket support (Optional) 1 DIMM 2 DIMMs KINGSTON KVR1333D3N9/2G 2GB DS ELPIDA J1 108BDSE-DJ-F 9 1.5V • • KINGSTON KVR1333D3N9/2G- SP(low prole) 2GB DS KTC D1288JEMFNGD9U - 1.
ASUS P8B75-M LE Series 1-19 DDR3-1066 MHz capability Side(s): SS - Single-sided DS - Double-sided DIMM support: • 1 DIMM : Supports one (1) module inserted into any slot as Single-channel memory conguration. We suggest that you install the module into A1 slot.
1-20 Chapter 1: Product introduction 1.7.3 Installing a DIMM Unplug the power supply before adding or removing DIMMs or other system components. Failure to do so can cause severe damage to both the motherboard and the components. 1. Press the retaining clips outward to unlock a DIMM socket.
ASUS P8B75-M LE Series 1-21 1.8 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.
1-22 Chapter 1: Product introduction IRQ assignments for this motherboard A B C D E F G H Intel PCH SA T A controller #0 – – – shared – – – – Intel PCH SA T A controller #1 – – – shared – – – – Realtek 81 1 1F controller shared – – – – – – – 1.
ASUS P8B75-M LE Series 1-23 1.10 Connectors 1.10.1 Rear panel connectors 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.
1-24 Chapter 1: Product introduction 7. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0/1.1 devices. 8. USB 3.0 ports 1 and 2. These two 9-pin Universal Serial Bus (USB) ports connect to USB 3.
ASUS P8B75-M LE Series 1-25 1.10.2 Internal connectors 1. 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 .
1-26 Chapter 1: Product introduction • For a fully congured system, we recommend that you use a power supply unit (PSU) that complies with A TX 12 V Specication 2.0 (or later version) and provides a minimum power of 350 W . • DO NOT forget to connect the 4-pin A TX +12V power plug.
ASUS P8B75-M LE Series 1-27 Do not forget to connect the fan cables to the fan connectors. Insufcient air ow inside the system may damage the motherboard components.
1-28 Chapter 1: Product introduction 7. System panel connector (10-1 pin F_P ANEL) This connector supports several chassis-mounted functions. • System power LED (2-pin PLED) This 2-pin connector is for the system power LED. Connect the chassis power LED cable to this connector .
ASUS P8B75-M LE Series 1-29 9. Intel ® B75 Serial A T A 3.0Gb/s connectors (7-pin SA T A3G_1~5 [blue]) These connectors connect to Serial A T A 3.0 Gb/s hard disk drives and optical drives via Serial A T A 3.0 Gb/s signal cables. • Y ou must install Windows ® XP Service Pack 3 or later version before using Serial A T A hard disk drives.
1-30 Chapter 1: Product introduction 1 1. USB 3.0 connector (20-1 pin USB3_34) This connector is for the additional USB 3.0 ports. Connect the USB 3.0 bracket cable to this connector , then install the USB 3.0 bracket to the rear side of the chassis. If your chassis support customized front panel installation, with ASUS USB 3.
ASUS P8B75-M LE Series 1-31 MemOK! switch Installing DIMMs that are incompatible with the motherboard may cause system boot failure, and the DRAM_LED near the MemOK! switch lights continuously . Press and hold the MemOK! switch until the DRAM_LED starts blinking to begin automatic memory compatibility tuning for successful boot.
1-32 Chapter 1: Product introduction 1.12 Onboard LEDs 1. Standby Power LED The motherboard comes with a standby power LED that lights up to indicate that the system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down the system and unplug the power cable before removing or plugging in any motherboard component.
ASUS P8B75-M LE Series 1-33 1.13 Software support 1.13.1 Installing an operating system This motherboard supports Windows ® XP / 7 Operating Systems (OS). Always install the latest OS version and corresponding updates to maximize the features of your hardware.
1-34 Chapter 1: Product introduction 1.13.3 Intel ® SBA support Intel ® SBA (Small Business Advantage) is a combination of hardware and software that provides unique security and productivity capabilities designed for small businesses. Intel ® SBA requires MEI driver (AMT host software kit) installed.
ASUS P8B75-M LE Series 1-35.
2-1 ASUS P8B75-M LE Series Chapter 2 BIOS information Save a copy of the original motherboard BIOS le to a USB ash disk in case you need to restore the BIOS in the future.
Chapter 2: BIOS information 2-2 2.1.2 ASUS EZ Flash 2 The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based utility . Before you start using this utility , download the latest BIOS le from the ASUS website at www .asus.
2-3 ASUS P8B75-M LE Series • This function supports USB ash disks with FA T 32/16 format and single partition only . • DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure! 2.
Chapter 2: BIOS information 2-4 Welcome to FreeDOS (http://www.freedos.org)! C:>d: D:> 3. When the Make Disk menu appears, select the FreeDOS command prompt item by pressing the item number . 4. At the FreeDOS prompt, type d: and press <Enter> to switch the disk from Drive C (optical drive) to Drive D (USB ash drive).
2-5 ASUS P8B75-M LE Series Updating the BIOS le T o update the BIOS le using BIOS Updater 1. At the FreeDOS prompt, type bupdater /pc /g and press <Enter>. ASUSTek BIOS Updater for DOS V1.28 Current ROM Update ROM A: Note [Enter] Select or Load [Tab] Switch [V] Drive Info [Up/Down/Home/End] Move [B] Backup [Esc] Exit P8B75LE.
Chapter 2: BIOS information 2-6 Using the power button , reset button , or the <Ctrl>+<Alt>+<Del> keys to force reset from a running operating system can cause damage to your data or system. We recommend to always shut down the system properly from the operating system.
2-7 ASUS P8B75-M LE Series 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 .
Chapter 2: BIOS information 2-8 Advanced Mode The Advanced Mode provides advanced options for experienced end-users to congure the BIOS settings. The gure below shows an example of the Advanced Mode . Refer to the following sections for the detailed congurations.
2-9 ASUS P8B75-M LE Series Pop-up window Select a menu item and press <Enter> to display a pop-up window with the conguration 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 t on the screen.
Chapter 2: BIOS information 2-10 2.3.1 System Language [English] Allows you to choose the BIOS language version from the options. Conguration options: [English] [Español] [ Русский ] 2.3.2 System Date [Day xx/xx/xxxx] Allows you to set the system date.
2-1 1 ASUS P8B75-M LE Series Administrator Password If you have set an administrator password, we recommend that you enter the administrator password for accessing the system. Otherwise, you might be able to see or change only selected elds in the BIOS setup program.
Chapter 2: BIOS information 2-12 Main Ai T weaker Advanced Monitor Boot T ool Exit Version 2.10.1208. Copyright (C) 2012 American Megatrends, Inc. Allows you to set the CPU bus speed to DRAM speed ratio mode. [Auto] DRAM speed will be set to the optimized settings.
2-13 ASUS P8B75-M LE Series 2.4.2 Memory Frequency [Auto] Allows you to set the memory operating frequency . The conguration options vary with the CPU bus speed : DRAM speed ratio mode item settings. Selecting a very high memory frequency may cause the system to become unstable! If this happens, revert to the default setting.
Chapter 2: BIOS information 2-14 [Disabled] Disables this function. The following three items appear only when you set the T urbo Mode item to [Enabled]. Long Duration Power Limit [Auto] Allows you to limit the turbo ratio’s long duration power . Use the <+> and <-> keys to adjust the value.
2-15 ASUS P8B75-M LE Series CPU Power Duty Control [T .Probe] DIGI + VRM Duty control adjusts the current and thermal conditions of every component’s phase. Conguration options: [T . Probe] - Select to maintain the VRM thermal balance. [Extreme] - Select to maintain the current VRM balance.
Chapter 2: BIOS information 2-16 2.4.10 iGPU V oltage [Offset Mode] [Offset Mode] T o offset the voltage by a positive or negative value. [Manual Mode] Allows you to set a xed iGPU voltage. iGPU Offset Mode Sign This item appears only when you set the iGPU V oltage item to [Manual Mode].
2-17 ASUS P8B75-M LE Series Be cautious when changing the settings of the Advanced menu items. Incorrect eld values can cause the system to malfunction. 2.5 Advanced menu The Advanced menu items allow you to change the settings for the CPU and other system devices.
Chapter 2: BIOS information 2-18 Execute Disable Bit [Enabled] [Enabled] Enables the No-Execution Page Protection T echnology . [Disabled] Forces the XD feature ag to always return to zero (0).
2-19 ASUS P8B75-M LE Series Intel ® Rapid Start T echnology [Disabled] Allows you to enable or disable the Intel(R) Rapid Start T echnology . Conguration options: [Enabled] [Disabled] The following three items appear only when you set the Intel(R) Rapid Start T echnology to [Enabled].
Chapter 2: BIOS information 2-20 2.5.4 System Agent Conguration Memory Remap Feature [Enabled] [Enabled] Allow you to enable remapping the memory above 4GB. [Disabled] Disables this function. Graphics Conguration Primary Display [Auto] Allows you to decide which graphics controller to use as the primary boot device.
2-21 ASUS P8B75-M LE Series W atchDog [Disabled] When set to [Enabled], the W atchDog Timer will monitor the time taken for each task performed by a software or hardware. Conguration options: [Enabled] [Disabled] The following two items become congurable only when you set the WatchDog T imer item to [Enabled].
Chapter 2: BIOS information 2-22 Front Panel T ype [HD] Allows you to set the front panel audio connector (AAFP) mode to legacy AC’97 or high- denition audio depending on the audio standard that the front panel audio module supports. [HD] Sets the front panel audio connector (AAFP) mode to high denition audio.
2-23 ASUS P8B75-M LE Series Power On By PS/2 Keyboard [Disabled] [Disabled] Disables the Power On by a PS/2 keyboard. [Space Bar] Sets the Space Bar on the PS/2 keyboard to turn on the system. [Ctrl-Esc] Sets the Ctrl+Esc key on the PS/2 keyboard to turn on the system.
Chapter 2: BIOS information 2-24 2.6 Monitor menu The Monitor menu displays the system temperature/power status, and allows you to change the fan settings. Scroll down to display the following items: Main Ai T weaker Advanced Monitor Boot T ool Exit Version 2.
2-25 ASUS P8B75-M LE Series 2.6.1 CPU T emperature / MB T emperature [xxxºC/xxxºF] The onboard hardware monitor automatically detects and displays the CPU and motherboard temperatures. Select Ignore if you do not wish to display the detected temperatures.
Chapter 2: BIOS information 2-26 2.6.4 Chassis Q-Fan Control [Enabled] [Disabled] Disables the Chassis Q-Fan control feature. [Enabled] Enables the Chassis Q-Fan control feature.
2-27 ASUS P8B75-M LE Series 2.7 Boot menu The Boot menu items allow you to change the system boot options. 2.7.1 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]. 2.7.
Chapter 2: BIOS information 2-28 2.7.4 Option ROM Messages [Force BIOS] [Force BIOS] The third-party ROM messages will be forced to display during the boot sequence. [Keep Current] The third-party ROM messages will be displayed only if the third-party manufacturer had set the add-on device to do so.
2-29 ASUS P8B75-M LE Series 2.8 T ools menu The T ools menu items allow you to congure options for special functions. Select an item then press <Enter> to display the submenu. 2.8.1 ASUS EZ Flash 2 Utility Allows you to run ASUS EZ Flash 2. Press [Enter] to launch the ASUS EZ Flash 2 screen.
Chapter 2: BIOS information 2-30 2.9 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.
ASUS P8B75-M LE Series A-1 Appendices 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.
A-2 Appendices VCCI: Japan Compliance Statement VCCI Class B Statement KC: Korea W arning Statement 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.
ASUS P8B75-M LE Series A-3 ASUS contact information ASUST eK COMPUTER INC. Address 15 Li-T e Road, Peitou, T aipei, T aiwan 1 1259 T elephone +886-2-2894-3447 Fax +886-2-2890-7798 E-mail info@asus.com.tw Web site www .asus.com.tw T echnical Support T elephone +86-21-3842991 1 Online support support.
A-4 Appendices EC Declaration of Conformity We, the undersigned, Manufacturer: ASUSTek COMPUTER INC. Address, City: No. 150, LI-TE RD., PEITOU, TAIPEI 112, TAIWAN R.O.C. Country: TAIWAN Authorized representative in Europe: ASUS COMPUTER GmbH Address, City: HARKORT STR.
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