Page 3 - Contents; Product introduction; Memory configurations; BIOS setup
iii Contents Contents ...................................................................................................... iiiNotices ......................................................................................................... viSafety information ........................................
Page 6 - Notices; Federal Communications Commission Statement; • Consult the dealer or an experienced radio/TV technician for help.; Canadian Department of Communications Statement
vi 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, and• This device must accept any interference received including interference that may cau...
Page 7 - Safety information; Electrical safety; motherboard) and is defined as a CLASS 1 LASER PRODUCT.; Operation safety
vii 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 cab...
Page 8 - About this guide; How this guide is organized; Bold text; Used to emphasize a word or a phrase.
viii About this guide This user guide contains the information you need when installing and configuring the motherboard. How this guide is organized This guide contains the following parts: • Chapter 1: Product introduction This chapter describes the features of the motherboard and the new technolog...
Page 9 - P7P55D LE specifications summary; VT1828S 8-channel High Definition Audio CODEC
ix P7P55D LE specifications summary (continued on the next page) CPU LGA1156 socket for Intel ® Core™ i7/ Core™ i5 Processors Supports Intel ® Turbo Boost Technology * Refer to www.asus.com for Intel CPU support list Chipset Intel ® P55 Express Chipset Memory 4 x DIMM, max. 16GB, DDR3 2000(O.C.)* / ...
Page 10 - ASUS Exclusive; - Internal Base Clock tuning from 80 MHz up to 500
x P7P55D LE specifications summary ASUS Unique Features ASUS 8+2 Phase Power Design ASUS Xtreme Design ASUS Exclusive Overclocking Features: - ASUS TurboV - ASUS Turbo Key ASUS Exclusive Features: - MemOK! - ASUS EPU - Express Gate ASUS Quiet Thermal Solution: - ASUS Fanless Design: Stylish Heatsink...
Page 13 - Before you proceed; any motherboard settings.; Onboard LED; Thank you for buying an ASUS; Chapter 1
ASUS P7P55D LE 1-1 If any of the items is damaged or missing, contact your retailer. 1.1 Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings. • Unplug the power cord from the wall socket before touching any component....
Page 14 - Layout contents; Motherboard overview; Motherboard layout
1-2 Chapter 1: Product introduction 1.2.2 Layout contents 1.2 Motherboard overview 1.2.1 Motherboard layout 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. Ensure that you install the m...
Page 15 - CoreTM; Installing the CPU; Locate the CPU socket on the motherboard.; and then move it to the right (B) until it is
ASUS P7P55D LE 1-3 1.3 Central Processing Unit (CPU) The motherboard comes with a surface mount LGA1156 socket designed for the Intel ® Core™ i7 / Core™ i5 Processors. 1.3.1 Installing the CPU To install a CPU: 1. Locate the CPU socket on the motherboard. • Upon purchase of the motherboard, ensure t...
Page 16 - fit the socket alignment keys into the CPU
1-4 Chapter 1: Product introduction 3. Lift the load lever in the direction of the arrow until the load plate is completely lifted. Load plate 4. Remove the PnP cap from the CPU socket. PnP cap The CPU fits in only one correct orientation. DO NOT force the CPU into the socket to prevent bending the ...
Page 18 - Installing the CPU heatsink and fan
1-6 Chapter 1: Product introduction 1.3.2 Installing the CPU heatsink and fan The Intel ® LGA1156 processor requires a specially designed heatsink and fan assembly to ensure optimum thermal condition and performance. • When you buy a boxed Intel ® processor, the package includes the CPU fan and heat...
Page 19 - Uninstalling the CPU heatsink and fan
ASUS P7P55D LE 1-7 3. Connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN. DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if you fail to plug this connector. 1.3.3 Uninstalling the CPU heatsink and fan To uninstall the CPU heatsink and ...
Page 20 - System memory; Overview; better performance with less power consumption.; Recommended memory configurations
1-8 Chapter 1: Product introduction 1.4 System memory 1.4.1 Overview The motherboard comes with four 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 soc...
Page 22 - P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1067MHz
1-10 Chapter 1: Product introduction P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1067MHz capability for CPU at 2.66, 2.8 and 2.93GHz P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1333MHz capability for CPU at 2.66, 2.8 and 2.93GHz Vendor Part No. Size SS/ DS Chip Brand Chip N...
Page 23 - P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1333MHz
ASUS P7P55D LE 1-11 P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1333MHz capability for CPU at 2.66, 2.8 and 2.93GHz (continued) Vendor Part No. Size SS/ DS Chip Brand Chip NO. Timing Dimm(Bios) Voltage DIMM socket support (Optional) A* B* C* Crucial CT25672BA1339.18FF 2048MB DS MICRON D...
Page 24 - P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1600MHz
1-12 Chapter 1: Product introduction P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1600MHz capability for CPU at 2.66GHz Vendor Part No. Size SS/ DS Chip Brand Chip NO. Timing Dimm(Bios) Voltage DIMM socket support (Optional) A* B* C* A-DATA AD31600E001GMU 3072MB(Kit of 3) SS N/A Heat-Sin...
Page 26 - P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1866MHz
1-14 Chapter 1: Product introduction P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1866MHz capability for CPU at 2.66GHz P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1866MHz capability for CPU at 2.8 and 2.93GHz P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-2000MHz ...
Page 28 - Expansion slot; Installing an expansion card; comply with PCI specifications.; PCI Express x1 slots; comply with the PCI Express specifications.
1-16 Chapter 1: Product introduction 1.5 Expansion slot In the future, you may need to install expansion cards. The following sub-sections describe the slot and the expansion cards that it supports. Unplug the power cord before adding or removing expansion cards. Failure to do so may cause you physi...
Page 29 - Jumpers; key during the boot process and enter BIOS setup to re-enter
ASUS P7P55D LE 1-17 1.6 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, w...
Page 30 - tuning for successful boot.
1-18 Chapter 1: Product introduction • The DRAM_LED also lights when the DIMM is not properly installed. Turn off the system and reinstall the DIMM before using the MemOK! function. • Press the MemOK! switch under Windows™ OS environment will reboot the computer and start memory tuning. • During the...
Page 31 - Connectors; Rear panel connectors; These two 4-pin Universal Serial Bus (USB) ports connect to; LAN port LED indications; These ports connects to a multi-speaker audio system.
ASUS P7P55D LE 1-19 1.8 Connectors 1.8.1 Rear panel connectors 4. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports connect to USB 2.0/1.1 devices. 5. Optical S/PDIF Out port. This port connects an external audio output device via an optical S/PDIF cable. 6. External SATA port....
Page 32 - push down firmly until the connectors completely fit.; Internal connectors
1-20 Chapter 1: Product introduction 1. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V) 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 com...
Page 33 - audio I/O module cable to this connector.; configuration with the Intel
ASUS P7P55D LE 1-21 3. Front panel audio connector (10-1 pin AAFP) This connector is for a chassis-mounted front panel audio I/O module that supports either HD Audio or legacy AC`97 audio standard. Connect one end of the front panel audio I/O module cable to this connector. • We recommend that you c...
Page 35 - 80 Mbps connection speed.
ASUS P7P55D LE 1-23 6. USB connectors (10-1 pin USB910; USB1112; USB1314) These connectors are for USB 2.0 ports. Connect the USB module cable to any of these connectors, then install the module to a slot opening at the back of the system chassis. These USB connectors comply with USB 2.0 specificati...
Page 36 - slot opening at the back of the system chassis.
1-24 Chapter 1: Product introduction 8. Digital audio connector (4-1 pin SPDIF_OUT) This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port(s). Connect the S/PDIF Out module cable to this connector, then install the module to a slot opening at the back of the system chassis....
Page 37 - following modes to configure your device.; Drive jumper setting
ASUS P7P55D LE 1-25 10. JMicron ® JMB361 IDE Connector (40-1 pin PRI_IDE [Blue]) The onboard IDE connector is for the Ultra DMA 133/100/66 signal cable. There are three connectors on each Ultra DMA 133/100/66 signal cable: blue, black, and gray. Connect the blue connector to the motherboard’s IDE co...
Page 38 - Installing an operating system; This motherboard supports Windows; Support DVD information; Running the support DVD
1-26 Chapter 1: Product introduction If Autorun is NOT enabled in your computer, browse the contents of the Support DVD to locate the file ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run the DVD. The Drivers menu shows the available device drivers if the system detects installed...
Page 39 - Chapter 2; Managing and updating your BIOS
ASUS P7P55D LE 2-1 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. • ASUS Update requires an Internet connection either through a network or an Internet Service...
Page 40 - ASUS EZ Flash 2; Tools; to switch between drives until the correct BIOS file is found.; Update BIOS from a file; b. Locate the BIOS file from the Open window, then click Open.; Exit Menu
2-2 Chapter 2: BIOS information 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 ...
Page 41 - and automatically reboots the system when done.; ASUS CrashFree BIOS 3 utility; USB flash drive that contains the BIOS file.; Recovering the BIOS; containing the BIOS file to the USB port.
ASUS P7P55D LE 2-3 2. When the correct BIOS file is found, EZ Flash 2 performs the BIOS update process and automatically reboots the system when done. • Only a USB flash disk with FAT 32/16 format and single partition can support the ASUS EZ Flash 2 utility. • Do not shut down or reset the system wh...
Page 42 - BIOS setup program; Entering BIOS Setup at startup; To enter BIOS Setup at startup:; Entering BIOS Setup after POST; To enter BIOS Setup after POST:; Main menu; and date and BIOS language in this menu.; to navigate through them.
2-4 Chapter 2: BIOS information 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...
Page 43 - item then press to display the SATA device information.; N/A if no IDE device is installed in the system.; Allows automatic selection of the appropriate SATA device type.; Enables or disables data multi-sectors transfers.; When set to [Auto], the data transfer from and to the device occurs in
ASUS P7P55D LE 2-5 2.3.1 SATA 1-6 While entering Setup, the BIOS automatically detects the presence of IDE/SATA devices. There is a separate submenu for each IDE/SATA device. Select a device item then press <Enter> to display the SATA device information. v02.61 (C)Copyright 1985-2009, American...
Page 44 - which correspond to different data transfer rates.; Storage Configuration
2-6 Chapter 2: BIOS information PIO Mode [Auto] [Auto] Allows automatic selection of the PIO (Programmed input/output) modes, which correspond to different data transfer rates. [0] [1] [2] [3] [4] Set the PIO mode to Mode 0, 1, 2, 3, or 4. DMA Mode [Auto] DMA (Direct Memory Access) allows your compu...
Page 45 - AHCI Configuration
ASUS P7P55D LE 2-7 SATA Configuration [Enhanced] Configuration options: [Disabled] [Compatible] [Enhanced] Configure SATA as [IDE] Sets the configuration for the Serial ATA connectors supported by the Southbridge chip. Configuration options: [IDE] [RAID] [AHCI] • If you want to use the Serial ATA ha...
Page 46 - Allows you to select the type of device connected to the system.; System Information
2-8 Chapter 2: BIOS information SATA Port1 [Auto] Allows you to select the type of device connected to the system. Configuration options: [Auto] [Not Installed] SMART Monitoring [Enabled] Allows you to set the Self-Monitoring, Analysis and Reporting Technology. Configration options: [Disabled] [Enab...
Page 47 - field values can cause the system to malfunction.; Scroll down to display the following items:
ASUS P7P55D LE 2-9 2.4 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 chapter vary dependi...
Page 48 - Manual; This item appears only when you set the; item to; Ai Overclock Tuner; according to your CPU model.; Ratio CMOS Setting
2-10 Chapter 2: BIOS information 2.4.1 Ai Overclock Tuner [Auto] Allows selection of CPU overclocking options to achieve desired CPU internal frequency. Select either one of the preset overclocking configuration options: Manual Allows you to individually set overclocking parameters. Auto Loads the o...
Page 49 - item; Allows you to set the DDR3 operating frequency.; DIMMs you install on the motherboard.
ASUS P7P55D LE 2-11 2.4.5 Xtreme Phase Full Power Mode [Auto] [Auto] Automatic configuration. [Enabled] Enables Full Power Mode to ensure the best CPU overclocking performance. The following two items appear only when you set the Ai Overclock Tuner item to [Manual], [D.O.C.P.] or [X.M.P.]. BCLK Freq...
Page 51 - Offset Voltage; To offset the voltage by a positive value.
ASUS P7P55D LE 2-13 DRAM READ to WRITE Delay(DD) [Auto] Configuration options: [Auto] [2 DRAM Clock] – [14 DRAM Clock] DRAM READ to WRITE Delay(DR) [Auto] Configuration options: [Auto] [2 DRAM Clock] – [14 DRAM Clock] DRAM READ to WRITE Delay(SR) [Auto] Configuration options: [Auto] [2 DRAM Clock] –...
Page 52 - enhance DRAM overclocking ability.; CPU Voltage Mode; VCore voltage may make the system unstable.
2-14 Chapter 2: BIOS information 2.4.13 DRAM Voltage [Auto] Allows you to set the DRAM voltage. The values range from 1.5V to 2.2V* with a 0.1V interval. According to Intel CPU spec, DIMMs with voltage requirement over 1.65V may damage the CPU permanently. We recommend you install the DIMMs with the...
Page 54 - CPU Configuration; automatically detects.; Advanced menu
2-16 Chapter 2: BIOS information 2.5.1 CPU Configuration The items in this menu show the CPU-related information that the BIOS automatically detects. The items shown in this screen may be different due to the CPU you installed. Be cautious when changing the settings of the Advanced menu items. Incor...
Page 55 - performance of the specific application.
ASUS P7P55D LE 2-17 CPU Ratio Setting [Auto] Allows you to adjust the ratio between CPU Core Clock and BCLK Frequency. Use the <+> and <-> keys to adjust the value. The valid value ranges differently according to your CPU model. C1E Support [Enabled] [Enabled] Enables the C1E support fun...
Page 56 - North Bridge Configuration; overwritten by PCI devices to be remapped above the total
2-18 Chapter 2: BIOS information Active Processor Cores [All] [All] Activate all CPU cores in the processor package. [1] Activate only 1 CPU core in the processor package. [2] Activate 2 CPU cores in the processor package. A20M [Disabled] [Enabled] Legacy OSes and APs may need this function enabled....
Page 57 - Allows you to select the Serial Port1 base address.
ASUS P7P55D LE 2-19 HDA Controller [Enabled] [Enabled] Enables the High Definition Audio Controller. [Disabled] Disables the controller. Front Panel Type [HD Audio] [AC97] Set the front panel audio connector (AAFP) mode to legacy AC’97 [HD Audio] Set the front panel audio connector (AAFP) mode to hi...
Page 58 - item then press to display the configuration options.; Enables the USB Host Controllers.
2-20 Chapter 2: BIOS information 2.5.4 USB Configuration The items in this menu allows you to change the USB-related features. Select an item then press <Enter> to display the configuration options. The USB Devices Enabled item shows the auto-detected values. If no USB device is detected, the ...
Page 59 - PCIPnP; Disables the Intel Virtualization Technology for Directed I/O.; Power menu; configuration options.; to be used for system suspend.; The system automatically configures the ACPI suspend mode.
ASUS P7P55D LE 2-21 2.5.5 PCIPnP The PCIPnP menu items allow you to change the advanced settings for PCI/PnP devices. Plug And Play O/S [No] [Yes] When set to [Yes] and if you install a Plug and Play operating system, the operating system configures the Plug and Play devices not required for boot. [...
Page 60 - Determines whether to invoke VGA BIOS POST on S3/STR resume.; will become user-configurable with set values.
2-22 Chapter 2: BIOS information 2.6.2 Repost Video on S3 Resume [No] Determines whether to invoke VGA BIOS POST on S3/STR resume. [No] The system will not invoke VGA BIOS POST on S3/STR resume. [Yes] The system invokes VGA BIOS POST on S3/STR resume. 2.6.3 ACPI 2.0 Support [Disabled] [Disabled] Whe...
Page 61 - causes an initialization string that turns the system power on.
ASUS P7P55D LE 2-23 Power On By External Modems [Disabled] [Disabled] Disables to power up the computer when the external modem receives a call while the computer is in Soft-off mode. [Enabled] The computer could be powered up when the external modem receives a call while the computer is in Soft-off...
Page 62 - Ignored; Ignored; Disables the Chassis Q-Fan control feature.
2-24 Chapter 2: BIOS information 2.6.7 Hardware Monitor CPU/MB Temperature [xxxºC/xxxºF] The onboard hardware monitor automatically detects and displays the CPU and motherboard temperatures. Select Ignored if you do not wish to display the detected temperatures. CPU Fan Speed [xxxxRPM] or [Ignored] ...
Page 63 - Boot menu
ASUS P7P55D LE 2-25 Chassis Fan Profile [Standard] This item appears only when you enable the Chassis Q-Fan Control feature and allows you to set the appropriate performance level of the chassis fan.[Standard] Sets to [Standard] to make the chassis fan automatically adjust depending on the chassis t...
Page 64 - Boot Settings Configuration; an item then press to display the configuration options.; Select this item to set or change the supervisor password. The; Supervisor; item on top of the screen shows the default; Not Installed; a password, this item shows; Installed; Change Supervisor Password; Confirm the password when prompted.
2-26 Chapter 2: BIOS information 2.7.2 Boot Settings Configuration Quick Boot [Enabled] [Disabled] When set to [Disabled], BIOS performs all the POST items. [Enabled] When set to [Enabled], BIOS skips some power on self tests (POST) while booting to decrease the time needed to boot the system. Full ...
Page 65 - Select the; Change User Password; Clear User Password; BIOS checks for user password when accessing the Setup utility.
ASUS P7P55D LE 2-27 The message Password Installed appears after you successfully set your password.To change the supervisor password, follow the same steps as in setting a user password.To clear the supervisor password, select the Change Supervisor Password then press <Enter>. The message Pas...
Page 66 - Tools menu; This item allows you to store or load multiple BIOS settings.; Add Your CMOS Profile; save your CMOS settings in the Save to sub-item.; Load CMOS Profiles; format and single partition only.
2-28 Chapter 2: BIOS information 2.8 Tools menu The Tools menu items allow you to configure options for special functions. Select an item then press <Enter> to display the submenu. 2.8.1 ASUS O.C. Profile This item allows you to store or load multiple BIOS settings. Add Your CMOS Profile Allow...
Page 67 - to stay at the first screen of Express Gate for user action.; environment after clearing its settings.; BIOS checks the Realtek LAN cable during the Power-On Self-Test
ASUS P7P55D LE 2-29 2.8.3 Express Gate [Auto] Allows you to enable or disable the ASUS Express Gate feature. The ASUS Express Gate feature is a unique instant-on environment that provides quick access to the Internet browser and Skype. Configuration options: [Disabled] [Enabled] [Auto] Enter OS Time...
Page 68 - Exit menu; Time, and Password, the BIOS asks for a confirmation before exiting.
2-30 Chapter 2: BIOS information 2.9 Exit menu The Exit menu items allow you to load the optimal or failsafe default values for the BIOS items, and save or discard your changes to the BIOS items. Pressing <Esc> does not immediately exit this menu. Select one of the options from this menu or &l...