Asus P7P55D LE Specifications

MotherboardP7P55D LE

xP7P55D LE specications summaryASUS Unique FeaturesASUS 8+2 Phase Power DesignASUS Xtreme DesignASUS Exclusive Overclocking Features: - ASUS Turbo

xiP7P55D LE specications summaryInternal I/O Connectors 3 x USB connectors support additional 6 USB ports 1 x IDE connector 6 x SATA connectors 1 x C

xii

ASUS P7P55D LE 1-1If any of the items is damaged or missing, contact your retailer.1.1 Before you proceedTake note of the following precautions befor

1-2 Chapter 1: Product introduction1.2.2 Layout contents1.2 Motherboard overview1.2.1 Motherboard layoutPlace six screws into the holes indicated b

ASUS P7P55D LE 1-31.3 Central Processing Unit (CPU)The motherboard comes with a surface mount LGA1156 socket designed for the Intel® Core™ i7 / Core™

1-4 Chapter 1: Product introduction3. Lift the load lever in the direction of the arrow until the load plate is completely lifted.Load plate4. Remov

ASUS P7P55D LE 1-57. Close the load plate (A), and then push down the load lever (B), ensuring that the front edge of the load plate slides under the

1-6 Chapter 1: Product introduction1.3.2 Installing the CPU heatsink and fanThe Intel® LGA1156 processor requires a specially designed heatsink and f

ASUS P7P55D LE 1-73. Connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN.DO NOT forget to connect the CPU fan connector! Ha

iiE4882First Edition V1 August 2009Copyright © 2009 ASUSTeK Computer Inc. All Rights Reserved.No part of this manual, including the products and softw

1-8 Chapter 1: Product introduction1.4 System memory1.4.1 OverviewThe motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modul

ASUS P7P55D LE 1-91.4.2 Memory congurationsYou may install 1GB, 2GB and 4GB unbuffered and non-ECC DDR3 DIMMs into the DIMM sockets.• The default m

1-10 Chapter 1: Product introductionP7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1067MHz capability for CPU at 2.66, 2.8 and 2.93GH

ASUS P7P55D LE 1-11P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1333MHz capability for CPU at 2.66, 2.8 and 2.93GHz (continued) Ven

1-12 Chapter 1: Product introductionP7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1600MHz capability for CPU at 2.66GHz Vendor Part

ASUS P7P55D LE 1-13P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1800MHz capability for CPU at 2.66GHzP7P55D LE Motherboard Quali

1-14 Chapter 1: Product introductionP7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1866MHz capability for CPU at 2.66GHzP7P55D LE M

ASUS P7P55D LE 1-15P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-2133MHz capability for CPU at 2.8 and 2.93GHzP7P55D LE Motherboar

1-16 Chapter 1: Product introduction1.5 Expansion slotIn the future, you may need to install expansion cards. The following sub-sections describe the

ASUS P7P55D LE 1-171.6 JumpersClear RTC RAM (3-pin CLRTC)This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can clear the CMO

iiiContentsContents ... iiiNotices ...

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 be

ASUS P7P55D LE 1-191.8 Connectors1.8.1 Rear panel connectors4. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports connect to U

1-20 Chapter 1: Product introduction1. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V)These connectors are for ATX power supply plugs. The power

ASUS P7P55D LE 1-213. Front panel audio connector (10-1 pin AAFP)This connector is for a chassis-mounted front panel audio I/O module that supports e

1-22 Chapter 1: Product introduction5. System panel connector (20-8 pin PANEL)This connector supports several chassis-mounted functions.• System pow

ASUS P7P55D LE 1-236. USB connectors (10-1 pin USB910; USB1112; USB1314)These connectors are for USB 2.0 ports. Connect the USB module cable to any o

1-24 Chapter 1: Product introduction8. Digital audio connector (4-1 pin SPDIF_OUT)This connector is for an additional Sony/Philips Digital Interface

ASUS P7P55D LE 1-2510. JMicron® JMB361 IDE Connector (40-1 pin PRI_IDE [Blue])The onboard IDE connector is for the Ultra DMA 133/100/66 signal cable.

1-26 Chapter 1: Product introductionIf Autorun is NOT enabled in your computer, browse the contents of the Support DVD to locate the le ASSETUP.EXE f

ASUS P7P55D LE 2-1Save a copy of the original motherboard BIOS le to a USB ash disk in case you need to restore the BIOS in the future. Copy the ori

ivContents2.3 Main menu ... 2-42.3.1 SATA 1-6 ...

2-2 Chapter 2: BIOS information2.1.2 ASUS EZ Flash 2The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based utility. Befo

ASUS P7P55D LE 2-32. When the correct BIOS le is found, EZ Flash 2 performs the BIOS update process and automatically reboots the system when done.•

2-4 Chapter 2: BIOS information2.2 BIOS setup programUse the BIOS Setup program to update the BIOS or congure its parameters. The BIOS screens inclu

ASUS P7P55D LE 2-52.3.1 SATA 1-6While entering Setup, the BIOS automatically detects the presence of IDE/SATA devices. There is a separate submenu fo

2-6 Chapter 2: BIOS informationPIO Mode [Auto][Auto] Allows automatic selection of the PIO (Programmed input/output) modes, which correspond to diff

ASUS P7P55D LE 2-7SATA Conguration [Enhanced]Conguration options: [Disabled] [Compatible] [Enhanced]Configure SATA as [IDE]Sets the conguration for

2-8 Chapter 2: BIOS informationSATA Port1 [Auto]Allows you to select the type of device connected to the system. Conguration options: [Auto] [Not Ins

ASUS P7P55D LE 2-92.4 Ai Tweaker menuThe Ai Tweaker menu items allow you to congure overclocking-related items.Be cautious when changing the setting

2-10 Chapter 2: BIOS information2.4.1 Ai Overclock Tuner [Auto]Allows selection of CPU overclocking options to achieve desired CPU internal frequency

ASUS P7P55D LE 2-112.4.5 Xtreme Phase Full Power Mode [Auto][Auto] Automatic conguration.[Enabled] Enables Full Power Mode to ensure the best CPU

v2.6.3 ACPI 2.0 Support ... 2-222.6.4 ACPI APIC Support ...

2-12 Chapter 2: BIOS informationDRAM RAS# to CAS# Delay [Auto]Conguration options: [Auto] [3 DRAM Clock] [4 DRAM Clock] – [9 DRAM Clock] [15 DRAM Clo

ASUS P7P55D LE 2-13DRAM READ to WRITE Delay(DD) [Auto]Conguration options: [Auto] [2 DRAM Clock] – [14 DRAM Clock]DRAM READ to WRITE Delay(DR) [Auto]

2-14 Chapter 2: BIOS information2.4.13 DRAM Voltage [Auto] Allows you to set the DRAM voltage. The values range from 1.5V to 2.2V* with a 0.1V interv

ASUS P7P55D LE 2-152.4.17 Load-Line Calibration [Auto][Auto] Automatic conguration.[Disabled] Follow Intel specications. [Enabled] Improve CPU V

2-16 Chapter 2: BIOS information2.5.1 CPU CongurationThe items in this menu show the CPU-related information that the BIOS automatically detects.The

ASUS P7P55D LE 2-17CPU Ratio Setting [Auto]Allows you to adjust the ratio between CPU Core Clock and BCLK Frequency. Use the <+> and <-> k

2-18 Chapter 2: BIOS informationActive Processor Cores [All][All] Activate all CPU cores in the processor package.[1] Activate only 1 CPU core in th

ASUS P7P55D LE 2-19HDA Controller [Enabled][Enabled] Enables the High Denition Audio Controller.[Disabled] Disables the controller.Front Panel Type

2-20 Chapter 2: BIOS information2.5.4 USB CongurationThe items in this menu allows you to change the USB-related features. Select an item then press

ASUS P7P55D LE 2-212.5.5 PCIPnPThe PCIPnP menu items allow you to change the advanced settings for PCI/PnP devices. Plug And Play O/S [No][Yes] When

viNoticesFederal Communications Commission StatementThis device complies with Part 15 of the FCC Rules. Operation is subject to the following two cond

2-22 Chapter 2: BIOS information2.6.2 Repost Video on S3 Resume [No]Determines whether to invoke VGA BIOS POST on S3/STR resume.[No] The system will

ASUS P7P55D LE 2-23Power On By External Modems [Disabled][Disabled] Disables to power up the computer when the external modem receives a call while

2-24 Chapter 2: BIOS information2.6.7 Hardware MonitorCPU/MB Temperature [xxxºC/xxxºF]The onboard hardware monitor automatically detects and displays

ASUS P7P55D LE 2-25Chassis Fan Profile [Standard]This item appears only when you enable the Chassis Q-Fan Control feature and allows you to set the ap

2-26 Chapter 2: BIOS information2.7.2 Boot Settings CongurationQuick Boot [Enabled][Disabled] When set to [Disabled], BIOS performs all the POST it

ASUS P7P55D LE 2-27The message Password Installed appears after you successfully set your password.To change the supervisor password, follow the same

2-28 Chapter 2: BIOS information2.8 Tools menuThe Tools menu items allow you to congure options for special functions. Select an item then press <

ASUS P7P55D LE 2-292.8.3 Express Gate [Auto]Allows you to enable or disable the ASUS Express Gate feature. The ASUS Express Gate feature is a unique

2-30 Chapter 2: BIOS information2.9 Exit menuThe Exit menu items allow you to load the optimal or failsafe default values for the BIOS items, and sav

viiSafety informationElectrical safety• To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating th

viiiAbout this guideThis user guide contains the information you need when installing and conguring the motherboard.How this guide is organizedThis g

ixP7P55D LE specications summary(continued on the next page)CPU LGA1156 socket for Intel® Core™ i7/ Core™ i5 Processors Supports Intel® Turbo Boost