Motherboard P5P41T LE
E4949 First Edition V1 August 2009 Copyright © 2009 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 Notices.......................................................................................................... vi Safety information...................................................................................... vii About this guide........................................................................................ viii P5P41T LE specifications summary.......................................................... ix Chapter 1: Product introduction 1.1 Welcome!.........................
Contents 1.10 1.11 Connectors.................................................................................. 1-19 1.10.1 Rear panel connectors................................................... 1-19 1.10.2 Internal connectors........................................................ 1-20 Software support......................................................................... 1-26 1.11.1 Installing an operating system....................................... 1-26 1.11.2 Support DVD information......
Contents 2.5 2.6 2.7 2.8 Power menu................................................................................. 2-15 2.5.1 Suspend Mode............................................................... 2-15 2.5.2 ACPI 2.0 Support .......................................................... 2-15 2.5.3 ACPI APIC Support . ..................................................... 2-15 2.5.4 APM Configuration......................................................... 2-15 2.5.5 Hardware Monitor..........
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 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.
Safety information Electrical safety • To 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. If possible, disconnect all power cables from the existing system before you add a device.
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 technology it supports. Chapter 2: BIOS information This chapter tells how to change system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also provided.
P5P41T LE specifications summary CPU LAN LGA775 Socket for Intel® Core™2 ����������������������������� Extreme /������������� Core™2 Quad / Core™2 Duo / Pentium® dual-core / Celeron® dual-core / Celeron® processors Supports Intel® 45nm multi-core CPU Intel® Hyper-Threading Technology ready Supports Enhanced Intel SpeedStep Technology (EIST) * Refer to www.asus.
P5P41T LE specifications summary Rear panel ports Internal connectors BIOS features Manageability Accessories Support DVD Form factor 1 x PS/2 keyboard port 1 x PS/2 mouse port 1 x LAN (RJ-45) port 4 x USB 2.0/1.1 ports 6-channel audio I/O port 1 x COM port 1 x Parallel port 1 x High Definition front panel audio connector 1 x S/PDIF out connector 1 x Speaker connector 1 x System panel connector 2 x USB 2.0 connectors support additional 4 USB 2.
Chapter 1 Product introduction 1.1 Welcome! Thank you for buying an ASUS® P5P41T LE motherboard! The motherboard delivers a host of new features and latest technologies, making it another standout in the long line of ASUS quality motherboards! Before you start installing the motherboard, and hardware devices on it, check the items in your package with the list below. 1.2 Package contents Check your motherboard package for the following items.
Intel® G41 Chipset The Intel® G41 Express Chipset is designed to support dual-channel DDR3 1333 (overclocking)/ �������������������������������������������� 1066 /�������������������������������������� 800 architecture, 1333/1066/800 Front Side Bus (FSB), PCIe 1.1, and mutli-core CPUs. It especially includes Intel® Fast memory bandwidth and reduces the latency of the memory accesses. Dual channel DDR3 1333 (O.C.
• ASUS Express Gate supports file uploading from SATA HDDs, ODDs, and USB drives. It supports file downloading to USB devices only. • The actrual boot time is subject to hardware configuration and product models. • Express Gate complies with the OpenGL standard. Refer to http://support.asus.com for Express Gate source codes. ASUS MyLogo2™ This feature allows you to convert your favorite photo into a 256-color boot logo for a more colorful and vivid image on your screen.
1.4 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. • 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.
1.5 Motherboard overview Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it. Ensure that you unplug the power cord before installing or removing the motherboard. Failure to do so can cause you physical injury and damage motherboard components. 1.5.1 Placement direction 1.5.2 Screw holes When installing the motherboard, ensure that you place it into the chassis in the correct orientation.
1.5.3 Motherboard layout 1 2 3 2 4 18.3cm(7.2in) CPU_FAN KBMS USB34 LAN1_USB12 Intel® G41 CHA_FAN PRI_IDE 5 EATXPWR AUDIO ICS 9LRS954 ATHEROS AR8121 30.5cm(12.
1.6 Central Processing Unit (CPU) The motherboard comes with a surface mount LGA775 socket designed for the Intel® Core™2 Extreme / Core™2 Quad / Core™2 Duo / Pentium® dual-core / Celeron® dual-core / Celeron® processors • Unplug all power cables before installing the CPU. • Connect the CPU fan cable to the CPU_FAN connector and chassis fan cable to the CHA_FAN connector to ensure system stability.
2. Press the load lever with your thumb (A), then move it to the left (B) until it is released from the retention tab. To prevent damage to the socket pins, do not remove the PnP cap unless you are installing a CPU. Retention tab A B Load lever 3. 4. Lift the load lever in the direction of the arrow to a 135º angle. PnP cap Load plate 4B Lift the load plate with your thumb and forefinger to a 100º angle (4A), then push the PnP cap from the load plate window to remove (4B). 4A 3 5.
6. Apply some Thermal Interface Material to the exposed area of the CPU that the heatsink will be in contact with, ensuring that it is spread in an even thin layer. Some heatsinks come with pre-applied thermal paste. If so, skip this step. DO NOT eat the Thermal Interface Material. If it gets into your eyes or touches your skin, ensure that you wash it off immediately, and seek professional medical help. To prevent contaminating the paste, DO NOT spread the paste with your finger directly. 7.
1.6.2 Installing the CPU heatsink and fan The Intel® LGA775 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 heatsink assembly. If you buy a CPU separately, ensure that you use only Intel®‑certified multi‑directional heatsink and fan. • Your Intel® LGA775 heatsink and fan assembly comes in a push-pin design and requires no tool to install.
3. Connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN. CPU FAN PWM CPU FAN IN CPU FAN PWR GND CPU_FAN P5P41T LE P5P41T LE CPU fan connector Do not forget to connect the CPU fan connector! Hardware monitoring errors can occur if you fail to plug this connector. 1.6.3 Uninstalling the CPU heatsink and fan To uninstall the CPU heatsink and fan: 1. Disconnect the CPU fan cable from the connector on the motherboard. 2. Rotate each fastener counterclockwise. 3.
4. Carefully remove the heatsink and fan assembly from the motherboard. 5. Rotate each fastener clockwise to ensure correct orientation when reinstalling. 1.7 System memory 1.7.1 Overview DIMM_A1 DIMM_B1 The motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Modules (DIMM) sockets.
1.7.2 Memory configurations You may install 512MB, 1GB, 2GB, and 4GB unbuffered non‑ECC DDR3 DIMMs into the DIMM sockets. • Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. • Due to the memory address limitation on 32-bit Windows® OS, when you install 4GB or more memory on the motherboard, the actual usable memory for the OS can be about 3GB or less.
DDR3-1333 MHz capability Vendor Part No. Size SS/ DS Brand Timing DIMM (BIOS) Chip NO. Voltage DIMM Support A* B* G.SKILL F3-10600CL8D-2GBHK 1024MB SS G.SKILL Heat-Sink Package • • G.SKILL F3-10600CL9D-2GBPK 1024MB SS G.SKILL Heat-Sink Package • • G.SKILL F3-10666CL7T-3GBPK 3072MB(Kit of 3) SS N/A Heat-Sink Package 7-7-7-18 1.5~1.6V • • G.SKILL F3-10666CL9T-3GBNQ 3072MB(Kit of 3) SS N/A Heat-Sink Package 9-9-9-24 1.5~1.6V • • G.
DDR3-1333 MHz capability SS/ DS Size Brand Timing DIMM (BIOS) Chip NO. DIMM Support Vendor Part No.
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. 2 To install a DIMM: DDR3 DIMM notch 1. Press the retaining clips outward to unlock a DDR3 DIMM socket. 2. Align a DIMM on the socket such that the notch on the DIMM matches the break on the socket. 1 1 Unlocked retaining clip A DDR3 DIMM is keyed with a notch so that it fits in only one direction.
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. Failure to do so may cause you physical injury and damage motherboard components. 1.8.1 Installing an expansion card To install an expansion card: 1.
1.9 1. 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 P5P41T LE 1 2 2 3 Normal (Default) Clear RTC P5P41T LE Clear RTC RAM To erase the RTC RAM: 1. Turn OFF the computer and unplug the power cord. 2.
1.10 Connectors 1.10.1 Rear panel connectors 1 2 10 3 9 8 7 4 5 6 1. PS/2 mouse port (green). This port is for a PS/2 mouse. 2. Parallel port. This 25-pin port connects a parallel printer, a scanner, or other devices. 3. LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN) through a network hub. Refer to the table below for the LAN port LED indications.
1.10.2 1. Internal connectors CPU and chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN) These fan connectors support a cooling fan of 350mA~740mA (8.88W max.) or a total of 1A~2.22A (26.64W max.) at +12V. 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. Do not forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components.
3. 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.
5. Front panel audio connector (10-1 pin AAFP) NC AGND NC NC SENSE2_RETUR GND PRESENCE# 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.
7. IDE connector (40-1 pin PRI_IDE) The onboard IDE connector is for the Ultra DMA 100/66/33 signal cable. There are three connectors on each Ultra DMA 100/66/33 signal cable: blue, black, and gray. Connect the blue connector to the motherboard’s IDE connector, then select one of the following modes to configure your device.
8. System panel connector (10-1 pin F_PANEL) This connector supports several chassis-mounted functions. PLED+ PLEDPWR GND PWR LED PWR BTN PIN 1 IDE_LED+ IDE_LEDGround Reset F_PANEL P5P41T LE HD_LED RESET P5P41T LE System panel connector • 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. The system power LED lights up when you turn on the system power, and blinks when the system is in sleep mode.
9. USB connectors (10-1 pin USB56, USB78) 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 specification that supports up to 480 Mbps connection speed. USB+5V USB_P8USB_P8+ GND NC USB78 USB+5V USB_P6USB_P6+ GND NC USB56 P5P41T LE USB+5V USB_P7USB_P7+ GND PIN 1 USB+5V USB_P5USB_P5+ GND PIN 1 P5P41T LE USB2.
1.11 Software support 1.11.1 Installing an operating system This motherboard supports Windows® XP/Vista 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.
Chapter 2 BIOS information 2.1 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 ASUS Update utility The ASUS Update is a utility that allows you to manage, save, and update the motherboard BIOS in Windows® environment. • ASUS Update requires an Internet connection either through a network or an Internet Service Provider (ISP).
Updating from the Internet a. Select Update BIOS from the Internet, then click Next. b. Select the ASUS FTP site nearest you to avoid network traffic, or click Auto Select then click Next. c. From the FTP site, select the BIOS version that you wish to download then click Next. The ASUS Update utility is capable of updating itself through the Internet. Always update the utility to avail all its features. Updating from a BIOS file 3. a. Select Update BIOS from a file, then click Next. b.
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 while updating the BIOS to prevent system boot failure! 2.1.
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.
2.2.2 Menu bar The menu bar on top of the screen has the following main items: Main For changing the basic system configuration. Advanced For changing the advanced system settings. Power For changing the advanced power management (APM) configuration. Boot For changing the system boot configuration. Tools For configuring options for special functions. Exit For selecting the exit options and loading default settings.
2.2.7 Pop-up window Select a menu item then press to display a pop-up window with the configuration options for that item. 2.2.8 Advanced Power Suspend Mode ACPI 2.0 Support ACPI APIC support APM Configuration Hardware Monitor BIOS SETUP UTILITY Boot Tools Exit Use [ENTER], [TAB] or [SHIFT-TAB] to select a field. [Auto] [Disabled] Options [Enabled] Disabled Enabled Use [+] or [-] to configure system Time.
2.3 Main menu When you enter the BIOS Setup program, the Main menu screen appears, giving you an overview of the basic system information. Refer to section 2.2.1 BIOS menu screen for information on the menu screen items and how to navigate through them.
LBA/Large Mode [Auto] Enables or disables the LBA mode. Setting to [Auto] enables the LBA mode if the device supports this mode, and if the device was not previously formatted with LBA mode disabled. Configuration options: [Disabled] [Auto] Block (Multi-sector Transfer) M [Auto] Enables or disables data multi-sectors transfers. When set to [Auto], the data transfer from and to the device occurs multiple sectors at a time if the device supports multi-sector transfer feature.
2.3.5 System Information This menu gives you an overview of the general system specifications. The BIOS automatically detects the items in this menu. Bios Information Displays the auto-detected BIOS information. Processor Displays the auto-detected CPU specification. System Memory Displays the auto-detected system memory. 2.4 Advanced menu The Advanced menu items allow you to change the settings for the CPU and other system devices. Take caution when changing the settings of the Advanced menu items.
The following items appear only when you set the AI Overclocking item to [Manual]. CPU Frequency [xxx] Displays the frequency sent by the clock generator to the system bus and PCI bus. The value of this item is auto-detected by the BIOS. Use the <+> and <-> keys to adjust the CPU frequency. You can also type the desired CPU frequency using the numeric keypad. The values range from 200 to 800. Refer to the table below for the correct Front Side Bus and CPU External Frequency settings.
NB Over Voltage [Auto] Manually set Northbridge chipset over voltage and each step is 6.25mv. Press <+> / <-> to adjust the value. Valid value is from 1.12500V to 1.51875V. CPU VTT [1.2V] Allows you to adjust CPU VTT over voltage and each step is 6.25mv. Valid value is from 1.20000V to 1.59375V. SB 1.5V Voltage [1.5V] Manually set Southbridge Chipset Voltage. Configuration options: [1.5V] [1.
Execute-Disable Bit Capability [Enabled] Allows you to enable or disable the No-Execution Page Protection Technology. Setting this item to [Disabled] forces the XD feature flag to always return to zero (0). Configuration options: [Disabled] [Enabled] The following item appears only when you installed an Intel® CPU that supports the Enhanced Intel® SpeedStep® Technology (EIST). Intel(R) SpeedStep(TM) Tech [Enabled] Allows you to use the Enhanced Intel® SpeedStep® Technology.
2.4.4 Onboard Devices Configuration Onboard Gigabit LAN [Enabled] Allows you to enable or disable the onboard LAN controller. Configuration options: [Enabled] [Disabled] Onboard LAN Boot ROM [Disabled] Allows you to enable or disable the boot ROM in the onboard LAN controller. This item appears only when the Onboard Gigabit LAN item is set to [Enabled] or [Auto]. Configuration options: [Disabled] [Enabled] Serial Port1 Address [3F8/IRQ4] Allows you to select the Serial Port1 base address.
Legacy USB Support [Auto] Allows you to enable or disable support for Legacy USB storage devices, including USB flash drives and USB hard drives. Setting to [Auto] allows the system to detect the presence of USB devices at startup. If detected, the USB controller legacy mode is enabled. If no USB device is detected, the legacy USB support is disabled. Configuration options: [Disabled] [Enabled] [Auto] USB 2.0 Controller Mode [HiSpeed] Allows you to configure the USB 2.
2.5 Power menu The Power menu items allow you to change the settings for the Advanced Power Management (APM). Select an item then press to display the configuration options. Main Advanced Power Suspend Mode ACPI 2.0 Support ACPI APIC Support BIOS SETUP UTILITY Boot Tools Exit [Auto] [Enabled] [Enabled] Select the ACPI state used for System Suspend. APM Configuration Hardware Monitor 2.5.
Power On By External Modem [Disabled] This allows either settings of [Enabled] or [Disabled] for powering up the computer when the external modem receives a call while the computer is in Soft-off mode. Configuration options: [Disabled] [Enabled] Power On By PCI (E) Device [Disabled] When set to [Enabled], this parameter allows you to wake the system through a PCI Express/PCI card. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead.
2.6 Boot menu The Boot menu items allow you to change the system boot options. Select an item then press to display the sub-menu. Main Advanced Power BIOS SETUP UTILITY Boot Tools Exit Boot Settings Boot Device Priority Boot Settings Configuration Security 2.6.1 Specifies the Boot Device Priority sequence. A virtual drive (Drive B:) may appear when you set the CD-ROM drive as the first boot device.
Hit ‘DEL’ Message Display [Enabled] When set to [Enabled], the system displays the message Press DEL to run Setup during POST. Configuration options: [Disabled] [Enabled] 2.6.3 Security The Security menu items allow you to change the system security settings. Select an item then press to display the configuration options. Change Supervisor Password Select this item to set or change the supervisor password. The Supervisor Password item on top of the screen shows the default Not Installed.
Clear User Password Select this item to clear the user password. Password Check [Setup] When set to [Setup], BIOS checks for user password when accessing the Setup utility. When set to [Always], BIOS checks for user password both when accessing Setup and booting the system. Configuration options: [Setup] [Always] 2.7 Tools menu The Tools menu items allow you to configure options for special functions. Select an item then press to display the sub-menu.
2.7.3 AI NET 2 Check Atheros LAN cable [Disabled] Enables or disables checking of the Atheros LAN cable during the Power-On Self‑Test (POST). Configuration options: [Disabled] [Enabled] 2.8 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.
