Intel 850 Micro-ATX Motherboard

USERS MANUAL

ASUS P4T-M Users Manual

USER'S NOTICE

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). ASUS PROVIDES THIS MANUAL AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT. 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. Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners benefit, without intent to infringe. Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated. Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation. Trend and ChipAwayVirus are trademarks of Trend Micro, Inc. Windows and MS-DOS are registered trademarks of Microsoft Corporation. The product name and revision number are both printed on the product itself. Manual revisions are released for each product design represented by the digit before and after the period of the manual revision number. Manual updates are represented by the third digit in the manual revision number. For previous or updated manuals, BIOS, drivers, or product release information, contact ASUS at http://www.asus.com.tw or through any of the means indicated on the following page. SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT. Copyright 2001 ASUSTeK COMPUTER INC. All Rights Reserved.
Product Name: ASUS P4T-M Manual Revision: 1.04 E679 Release Date: January ASUS P4T-M Users Manual

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3. H/W SETUP Layout Contents

3.3 Getting Started

IMPORTANT: Due to Pentium 4 CPUs power consumption requirement, an ATX12V power supply is recommended for this motherboard. For typical system configurations, an ATX12V power supply that can supply at least 230W and at least 8.5A on the +12V lead is required. For heavily-loaded configurations, an ATX12V power supply that can supply at least 300W is required. Before using your computer, you must complete the following steps: Check Motherboard Settings Install Memory Modules Install the Central Processing Unit (CPU) Install Expansion Cards Connect Ribbon Cables, Panel Wires, and Power Supply
3. H/W SETUP Getting Started
WARNING! Computer motherboards and expansion cards contain very delicate Integrated Circuit (IC) chips. To protect them against damage from static electricity, you should follow some precautions whenever you work on your computer. 1. Unplug your computer when working on the inside. 2. Use a grounded wrist strap before handling computer components. If you do not have one, touch both of your hands to a safely grounded object or to a metal object, such as the power supply case. 3. Hold components by the edges and try not to touch the IC chips, leads or connectors, or other components. 4. Place components on a grounded antistatic pad or on the bag that came with the component whenever the components are separated from the system. 5. Ensure that the ATX power supply is switched off before you plug in or remove the ATX power connector on the motherboard. WARNING! Make sure that you unplug your power supply when adding or removing system components. Failure to do so may cause severe damage to your motherboard, peripherals, and/or components.

3.4 System Memory

NOTE: No hardware or BIOS setup is required after adding or removing memory. This motherboard has four 184-pin Rambus Inline Memory Modules (RIMM) sockets. These sockets support 64Mbit, 128Mbit, and 256Mbit Direct RDRAM technologies.
Location RIMMA1 (Rows 0&1) RIMMA2 (Rows 2&3) RIMMB1 (Rows 4&5) RIMMB2 (Rows 6&7) Memory Module RDRAM C-RIMM (use when socket will not be populated) RDRAM C-RIMM (use when socket will not be populated) RDRAM C-RIMM (use when socket will not be populated) RDRAM C-RIMM (use when socket will not be populated) TOTAL SYSTEM MEMORY

The motherboard provides a ZIF Socket for the supported CPUs listed in section 2.1.1 Specifications. The CPU that came with the motherboard should have a fan attached to it to prevent overheating. If this is not the case, then purchase a fan before you turn on your system.

Socket 423 Pentium 4

Gold Arrow

P4T-M Socket 423

Before you start, you should check to see that you have the following items:

Rubber Pad

Metal Baseboard
2 Metal heatsink retaining clips 4 Copper captive nuts

4 Washers

4 Pan Head screws

2 Heatsink support bases

3. H/W SETUP CPU

3.5.1 CPU Installation

Step 1: Install the Baseboard
A metal baseboard is required to install the heatsink to the motherboard. A rubber pad is placed between the metal board and motherboard to provide insulation to prevent shorting.
Align the rubber pad over the metal baseboard so that the holes match. Align the motherboard over the rubber pad and metal baseboard so that the screws on the baseboard match up with the motherboards screw holes.
Rubber Pad Metal Baseboard
Place the four washers over the four screws on the baseboard.
Tighten the four copper captive nuts over the washers.

Copper captive nut

rboard

9=IDAH

a erbo th

Washer

IMPORTANT: This step is a MUST! The washers are necessary to prevent shorting.

Step 2: Install the CPU

A. L ocate the Z I F socket on the motherboard. B. Unlock the socket by pressing the lever sidesways and then lifting it up to a 1 angle. C. Align the C PU over the socket such that its notched or marked corner matches the sockets corner near the end of the lever, while making sure that the C PU is parallel to the socket. D. C arefully insert the C PU into the socket until it fits in place. The illustration below shows how to insert a C PU properly. CAUTION! The C PU fits in only one orientation. D o not force the C PU into the socket as it will bend the pins and damage the C PU. I t should drop into the socket with minimal pressure. I f not, check its orientation or check for bent pins.
E. Secure the C PU into the socket by pushing the socket lever all the way down. Y ou will hear a click indicating that the lever is in place.
Step 3: Install the Heatsink Support Base
Place the two heatsink support base as shown and screw in the four pan head screws.
Step 4: Install the Heatsink
Carefully place the fan heatsink on top of the heatsink support base and connect the fan power cable to the CPU fan connector.
Connect to the CPU fan connector.
Step 5: Install the Heatsink Retaining Clips
Latch one end of the heatsink retaining clip to one of the tabs on the heatsink support base.

3.6.3 Accelerated Graphics Port (AGP 4X)
This motherboard provides an accelerated graphics port (AGP 4X) to support a new generation of AGP graphics cards with ultra-high memory bandwidth.
P4T-M Accelerated Graphics Port (AGP)
IMPORTANT: Only 1.5V AGP cards are supported. ASUS AGP 4X cards are rated for both 1.5 and 3.3 Volts. Early AGP cards only operate at 3.3 volts and will not fit properly into the new AGP 4X slots. See examples of both types below:
An early 3.3V AGP card: Do not use. A new 1.5 / 3.3V AGP card: OKAY to use.

3.7 External Connectors

WARNING! Some pins are used for connectors or power sources. These are clearly distinguished from jumpers in the Motherboard Layout. Placing jumper caps over these connector pins will cause damage to your motherboard. IMPORTANT: Ribbon cables should always be connected with the red stripe to Pin 1 on the connectors. Pin 1 is usually on the side closest to the power connector on hard drives and CD-ROM drives, but may be on the opposite side on floppy disk drives. Check the connectors before installation because there may be exceptions. IDE ribbon cables must be less than 46 cm (18 in.), with the second drive connector no more than 15 cm (6 in.) from the first connector.

3. H/W SETUP Connectors

1) PS/2 Mouse Connector (Green 6-pin PS2KBMS) The system will direct IRQ12 to the PS/2 mouse if one is detected. If one is not detected, expansion cards can use IRQ12. See PS/2 Mouse Function Control in 4.4 Advanced Menu.
PS/2 Mouse (6-pin female)
2) PS/2 Keyboard Connector (Purple 6-pin PS2KBMS) This connection is for a standard keyboard using an PS/2 plug (mini DIN). This connector will not allow standard AT size (large DIN) keyboard plugs. You may use a DIN to mini DIN adapter on standard AT keyboards.
PS/2 Keyboard (6-pin female)
3) Parallel Port Connector (Burgundy 25-pin PRINTER) You can enable the parallel port and choose the IRQ through Onboard Parallel Port (see 4.4.2 I/O Device Configuration). NOTE: Serial printers must be connected to the serial port.
Parallel (Printer) Port (25-pin female)
COM 1 Serial Port (9-pin male)
P4T-M Serial COM2 Bracket
4) Serial Port Connectors (Teal/Turquoise 9-pin COM1, 10-1 pin COM2) One serial port is ready for a mouse or other serial devices. A second serial header is available using a serial port bracket connected from the motherboard to an expansion slot opening. See Onboard Serial Port 1/2 in 4.4.2 I/O Device Configuration for settings.
5) Universal Serial Bus Ports (Black two 4-pin USB) Two USB ports are available for connecting USB devices. For additional USB ports, you can use the USB headers (see USB Headers later in this section). NOTE: USB Function (see 4.4.3 PCI Configuration) must be Enabled to use these ports.
Universal Serial Bus (USB) 2
6) Fast-Ethernet Port Connector (RJ45) (optional) The RJ45 connector is optional at the time of purchase and is located on top of the USB connectors. The connector allows the motherboard to connect to a Local Area Network (LAN) through a network hub.

WOL_CON

+5 Volt Standby

Ground

P4T-M Wake-On-LAN Connector
18) Standard and Consumer Infrared (SIR) Module Connector (5-pin IR) This connector supports an optional wireless transmitting and receiving infrared module. This module mounts to a small opening on system cases that support this feature. You must also configure the setting through UART2 Use Infrared (see 4.4.2 I/O Device Configuration) to select whether UART2 is directed for use with COM2 or IrDA. Use the five pins as shown in Back View and connect a ribbon cable from the module to the motherboards SIR connector according to the pin definitions.

+5V (NC) IRRX GND IRTX

Front View

Back View

SIR CIR
P4T-M Front Panel Connectors

NC GND NC CIRRX +5VSB

IR_CON

IRRX GND IRTX

NC GND NC CIRRX +5VSB CHASSIS# EXTSMI# +5V MLEDPCIRST# BATT NC
IRRX GND IRTX SMBDATA +3VSB SMBCLK LOCKKEY NC NC NC

IRTX GND IRRX

+5V (NC)
P4T-M Infrared Module Connector
19) Front Panel Connectors (24-1 pin AFPANEL) This connector allows you to setup an optional ASUS ipanel, an easy to access operational console mounted in a standard front drive bay. The iPanel offers front I/O ports, status LEDs and space reserved for a hard disk drive. (If you are not using an ASUS iPanel, you can connect an optional wireless transmitting and receiving infrared module to the SIR connector or an optional consumer infrared connector set to the CIR and SIR connectors for both wireless transmitting and remote control functions through one external infrared module.)
20) Power Supply Connectors (20-pin block ATXPWR) (4-pin ATX12V) These connectors supply ATX 12V power. Each power supply plug inserts in one orientation only. Push down firmly and make sure the pins are aligned. IMPORTANT: Make sure that your ATX 12V power supply (minimum recommended wattage: 230 watts; 300W for a fully-configured system) can supply at least 20 amperes on the +5-volt lead and at least 720mA on the +5-volt standby lead (+5VSB). Your system may become unstable/unreliable and may experience difficulty in powering up if your power supply is inadequate. For WakeOn-LAN support, your ATX power supply (minimum recommended wattage: 230watts) must supply at least 720mA +5VSB.

6. When prompted to confirm the BIOS update, press Y to start the update.
7. The utility starts to program the new BIOS information into the flash ROM. The boot block will be updated automatically only when necessary. This will minimize the chance that a failed update will prevent your system from booting up. When the programming is finished, Flashed Successfully will be displayed.
8. Follow the onscreen instructions to continue:
WARNING! If you encounter problems while updating the new BIOS, DO NOT turn off your system since this might prevent your system from booting up. Just repeat the process, and if the problem still persists, update the original BIOS file you saved to disk above. If the Flash Memory Writer utility was not able to successfully update a complete BIOS file, your system may not be able to boot up. If this happens, your system will need servicing.

4.2 BIOS Setup Program

This motherboard supports a programmable EEPROM that can be updated using the provided utility as described in 4.1 Managing and Updating Your BIOS. The utility is used if you are installing a motherboard, reconfiguring your system, or prompted to Run Setup. This section describes how to configure your system using this utility. Even if you are not prompted to use the Setup program, at some time in the future you may want to change the configuration of your computer. For example, you may want to enable the Security Password Feature or make changes to the power management settings. It will then be necessary to reconfigure your system using the BIOS Setup program so that the computer can recognize these changes and record them in the CMOS RAM of the EEPROM. The EEPROM on the motherboard stores the Setup utility. When you start up the computer, the system provides you with the opportunity to run this program. This appears during the Power-On Self Test (POST). Press <Delete> to call up the Setup utility. If you are a little bit late in pressing the mentioned key, POST will continue with its test routines, thus preventing you from calling up Setup. If you still need to call Setup, restart the system by pressing <Ctrl> + <Alt> + <Delete>, or by pressing the Reset button on the system chassis. You can also restart by turning the system off and then back on again. But do so only if the first two methods fail. The Setup program has been designed to make it as easy to use as possible. It is a menu-driven program, which means you can scroll through the various sub-menus and make your selections among the predetermined choices. To access the BIOS Setup program, press the <Delete> key after the computer has run through its POST. NOTE: Because the BIOS software is constantly being updated, the following BIOS screens and descriptions are for reference purposes only and may not reflect your BIOS screens exactly.

Program Information

4.2.1 BIOS Menu Bar
The top of the screen has a menu bar with the following selections: MAIN Use this menu to make changes to the basic system configuration. ADVANCED Use this menu to enable and make changes to the advanced features. POWER Use this menu to configure and enable Power Management features. BOOT Use this menu to configure the default system device used to locate and load the Operating System. Use this menu to exit the current menu or specify how to exit the EXIT Setup program. To access the menu bar items, press the right or left arrow key on the keyboard until the desired item is highlighted.

4.2.2 Legend Bar

At the bottom of the Setup screen you will notice a legend bar. The keys in the legend bar allow you to navigate through the various setup menus. The following table lists the keys found in the legend bar with their corresponding alternates and functions.
<Esc> or (keypad arrow) or (keypad arrow) - (minus key) + (plus key) or spacebar <Enter> <Home> or <PgUp> <End> or <PgDn> <F5> <F10>
Moves the cursor to the first field Moves the cursor to the last field Resets the current screen to its Setup Defaults Saves changes and exits Setup ASUS P4T-M Users Manual 43
Navigation Key(s) <F1> or <Alt + H>
Function Description Displays the General Help screen from anywhere in the BIOS Setup Jumps to the Exit menu or returns to the main menu from a sub-menu Selects the menu item to the left or right Moves the highlight up or down between fields Scrolls backward through the values for the highlighted field Scrolls forward through the values for the highlighted field Brings up a selection menu for the highlighted field

Menu Introduction

General Help
In addition to the Item Specific Help window, the BIOS setup program also provides a General Help screen. This screen can be called up from any menu by simply pressing <F1> or the <Alt> + <H> combination. The General Help screen lists the legend keys with their corresponding alternates and functions.
Saving Changes and Exiting the Setup Program
See 4.7 Exit Menu for detailed information on saving changes and exiting the setup program.

Scroll Bar

When a scroll bar appears to the right of a help window, it indicates that there is more information to be displayed that will not fit in the window. Use <PgUp> and <PgDn> or the up and down arrow keys to scroll through the entire help document. Press <Home> to display the first page, press <End> to go to the last page. To exit the help window, press <Enter> or <Esc>.

Sub-Menu

Note that a right pointer symbol (as shown in the left view) appears to the left of certain fields. This pointer indicates that a sub-menu can be launched from this field. A sub-menu contains additional options for a field parameter. To call up a submenu, simply move the highlight to the field and press <Enter>. The sub-menu will then immediately appear. Use the legend keys to enter values and move from field to field within a sub-menu just as you would within a menu. Use the <Esc> key to return to the main menu. Take some time to familiarize yourself with each of the legend keys and their corresponding functions. Practice navigating through the various menus and sub-menus. If you accidentally make unwanted changes to any of the fields, use the set default hot key <F5>. While moving around through the Setup program, note that explanations appear in the Item Specific Help window located to the right of each menu. This window displays the help text for the currently highlighted field. NOTE: The item heading in square brackets represents the default setting for that field.

4.3 Main Menu

When the Setup program is accessed, the following screen appears:
System Date [XX/XX/XXXX] Sets your system to the date that you specify (usually the current date). The format is month, day, year. Valid values for month, day, and year are Month: (1 to 12), Day: (1 to 31), Year: (100 year range). Use the <Tab> or <Shift> + <Tab> keys to move between the month, day, and year fields. Legacy Diskette A [1.44M, 3.5 in.], Legacy Diskette B [None] Sets the type of floppy drives installed. Configuration options: [None] [360K, 5.25 in.] [1.2M , 5.25 in.] [720K , 3.5 in.] [1.44M, 3.5 in.] [2.88M, 3.5 in.] Floppy 3 Mode Support [Disabled] This is required to support older Japanese floppy drives. Floppy 3 Mode support will allow reading and writing of 1.2MB (as opposed to 1.44MB) on a 3.5inch diskette. Configuration options: [Disabled] [Enabled]

Forgot the Password?

Clear CMOS

Normal

P4T-M Clear RTC RAM
Halt On [All but keyboard] This field determines which types of errors will cause the system to halt. Configuration options: [All Errors] [No Error] [All but Keyboard] [All but Disk] [All but Disk/Keyboard] Installed Memory [XXX MB] This display-only field displays the amount of conventional memory detected by the system during bootup. You do not need to make changes to this field. 50 ASUS P4T-M Users Manual

Keyboard Features

If you forgot the password, you can clear the password by erasing the CMOS Real Time Clock (RTC) RAM. The RAM data containing the password information is powered by the onboard button cell battery. To erase the RTC RAM: (1) Unplug your computer, (2) Move jumpers from Normal [2-3] to Clear CMOS [1-2], then immediately return the jumper cap to the Normal position [2-3], (3) Turn ON your computer, (4) Hold down <Delete> during bootup and enter BIOS setup to re-enter user preferences.

4.4 Advanced Menu

CPU Internal Frequency [1400MHz] This field allows you to select the internal frequency of your CPU. Select the frequencies that you desire. Notes: The speed of locked processors may not be adjusted. Selecting a frequency higher than the CPU manufacturer recommends may cause the system to hang or crash. See System Hangup.
CPU Level 1 Cache, CPU Level 2 Cache [Enabled] These fields allow you to choose from the default of [Enabled] or choose [Disabled] to turn on or off the CPUs Level 1 and Level 2 built-in cache. Configuration options: [Disabled] [Enabled] CPU Fast String [Disabled] When set to [Enabled], the CPU has direct access to the memory. Leave on default setting for best performance. Configuration options: [Disabled] [Enabled] FPU OPCODE Compatible Mode [Disabled] Leave on default setting for optimized performance of Pentium 4 processor. Configuration options: [Disabled] [Enabled]
RDRAM Frequency (MHz) [Auto] This feature tells the clock generator what frequency to send to the RDRAM. The default setting [Auto] seeks to balance optimal performance with stability. This default setting is show only; no options are available.

4.4.2 I/O Device Configuration
Onboard AC97 Controller [Auto] The motherboard offers an AC97 Audio Controller chip. BIOS will automatically activate the Audio Controller if it is available. Configuration options; [Auto] [Disabled] Onboard Lan Controller [Enabled] (only on model with LAN) This motherboard features an integrated LAN controller. If you want to use it, leave it on the default setting. If you want to use an add-on LAN card, select [Disabled]. Configuration options; [Disabled] [Enabled] NOTE: To disable the integrated LAN controller, you must first set this field to [Disable], shut down your system, and then restart. Onboard FDC Swap A&B [No Swap] This option selects drive letter assignments. Configuration options; [No Swap] [Swap AB] Floppy Disk Access Control [R/W] When set to [Read Only], this field protects files from being copied to floppy disks by allowing reads from the floppy disk drive but not writes. The setup default [R/W] allows both reads and writes. Configuration options: [R/W] [Read Only] Onboard Serial Port 1 [3F8H/IRQ4], Onboard Serial Port 2 [2F8H/IRQ3] These fields allow you to set the addresses for the onboard serial connectors. Serial Port 1 and Serial Port 2 must have different addresses. Configuration options: [3F8H/ IRQ4] [2F8H/IRQ3] [3E8H/IRQ4] [2E8H/IRQ10] [Disabled]
4. BIOS SETUP I/O Device Config
UART2 Use Standard Infrared [Disabled] When enabled, this field activates the onboard standard infrared feature and sets the second serial UART to support the infrared module connector on the motherboard. If your system already has a second serial port connected to the onboard COM2 connector, it will no longer work if you enable the infrared feature. See IrDA-Compliant Infrared Module Connector in 3.8 External Connectors. Configuration options: [Disabled] [Enabled] Onboard Parallel Port [378H/IRQ7] This field sets the address of the onboard parallel port connector. If you disable this feature, Parallel Port Mode and ECP DMA Select configurations will not be available. Configuration options: [Disabled] [378H/IRQ7] [278H/IRQ5] Parallel Port Mode [ECP+EPP] This field allows you to set the operation mode of the parallel port. [Normal] allows normal-speed operation but in one direction only; [EPP] allows bidirectional parallel port operation; [ECP] allows the parallel port to operate in bidirectional DMA mode; [ECP+EPP] allows normal speed operation in a two-way mode. Configuration options: [Normal] [EPP] [ECP] [ECP+EPP] ECP DMA Select [3] This field allows you to configure the parallel port DMA channel for the selected ECP mode. This selection is available only if you select [ECP] or [ECP+EPP] in Parallel Port Mode above. Configuration options: [1] [3] Onboard Game Port [200H-207H] This field sets the I/O address to the game port. Configuration options; [200H207H] [208H-20FH] Onboard MIDI I/O [330H-331H] This field sets the I/O address and IRQ for MIDI. Configuration options; [330H331H] [300H-301H] Onboard MIDI IRQ [10] This field indicates the onboard IRQ assignment for MIDI. Configuration options; [3 ,4, 5, 7, 9, 10, 11, 12, 14, 15]

5.2 Start Windows

When you start Windows 98 for the first time after installing your motherboard, Windows will detect all plug-and play devices. Follow the Add New Hardware Wizard to install all necessary device drivers. When prompted to restart, select No and then follow the setup procedures in this section. NOTE: Because there are various motherboard settings, options, and expansion cards, the following can only be used as a general reference and may not be an exact reflection of your system.

5. S/W SETUP Windows 98

5.3 P4T-M Motherboard Support CD
NOTE: The support CD contents are subject to change at any time without notice. To begin using your support CD disc, just insert it into your CD-ROM drive and the support CD installation menu should appear. If the menu does not appear, doubleclick or run E:\ASSETUP.EXE (assuming that your CD-ROM drive is drive E:).

5.3.1 Installation Menu

INF Update Utility for Intel 850 Chipset: Installs INF files in Windows for the following items: System and Graphics, LPC Interface, SM Bus, PCI Bridge, Bus Master IDE, USB Host, and Controllers. Intel Ultra ATA Storage Driver: Installs Intels storage driver. Realtek RTL8139C PCI Faster Ethernet NIC Driver: Installs Realteks LAN driver driver. ASUS PC Probe Vx.xx: Installs a utility to monitor your computers fan, temperature, and voltages. ASUS Update Vx.xx: Installs a program to help you update your BIOS or download a BIOS image file. Microsoft DirectX Driver: Installs Microsoft DirectX driver. YAMAHA Soft Synthesizer S-YXG50: Installs the Yamaha SoftSynthesizer for playing MIDI files through software. Refer to the online help for more information. PC-cillin 2000 Vx.xx: Installs the PC-cillin virus protection software. View the online help for more information. Adobe Acrobat Reader Vx.x: Installs the Adobe Acrobat Reader software necessary to view users manuals saved in PDF format. Updated or other language versions of this motherboard's manual is available in PDF format at any of our web sites. Cyberlink Video and Audio Applications: Installs Cyberlink PowerPlayer SE, PowerDVD Trial, and Cyberlink VideoLive Mail. (TO SEE THE FOLLOWING ITEMS, CLICK RIGHT ARROW ON THE LOWERRIGHT CORNER OF THE MAIN MENU) 70 ASUS P4T-M Users Manual

BIOS (Basic Input/Output System) BIOS is a set of routines that affect how the computer transfers data between computer components, such as memory, disks, and the display adapter. The BIOS instructions are built into the computers read-only memory. BIOS parameters can be configured by the user through the BIOS Setup program. The BIOS can be updated using the provided utility to copy a new BIOS file into the EEPROM. Bit (Binary Digit) Represents the smallest unit of data used by the computer. A bit can have one of two values: 0 or 1.

7. APPENDIX Glossary

Boot Boot means to start the computer operating system by loading it into system memory. When the manual instructs you to boot your system (or computer), it means to turn ON your computer. Reboot means to restart your computer. When using Windows 95 or later, selecting Restart from Start | Shut Down. will reboot your computer. Bus Master IDE PIO (Programmable I/O) IDE requires that the CPU be involved in IDE access and waiting for mechanical events. Bus master IDE transfers data to/from the memory without interrupting the CPU. Bus master IDE driver and bus master IDE hard disk drives are required to support bus master IDE mode. Byte (Binary Term) One byte is a group of eight contiguous bits. A byte is used to represent a single alphanumeric character, punctuation mark, or other symbol. COM Port COM is a logical device name used by to designate the computer serial ports. Pointing devices, modems, and infrared modules can be connected to COM ports. Each COM port is configured to use a different IRQ and address assignment. Concurrent PCI Concurrent PCI maximizes system performance with simultaneous CPU, PCI and ISA bus activities. It includes multi-transaction timing, enhanced write performance, a passive release mechanism and support for PCI 2.1 compliant delayed transactions. Concurrent PCI provides increased bandwidth, reduced system latencies, improves video and audio performance, and improves processing of host based applications. CPU (Central Processing Unit) The CPU, sometimes called Processor, actually functions as the brain of the computer. It interprets and executes program commands and processes data stored in memory. Currently, there are socket 370 (for Pentium III FC-PGA and CeleronPPGA), socket 7 (for Pentium, AMD, Cyrix, IBM), slot 1 (for Pentium II and III), slot 2 (for Xeon), and slot A (for AMD) processors. Device Driver A device driver is a special set of instructions that allows the computers operating system to communicate with devices such as VGA, audio, printer, or modem. DOS (Disk Operating System) DOS is the foundation on which all other programs and software applications operate, including Windows. DOS is responsible for allocating system resources such as memory, CPU time, disk space, and access to peripheral devices. For this reason, DOS constitutes the basic interface between you and your computer. DRAM (Dynamic Random Access Memory) There are several different types of DRAM such as, EDO DRAM (Extended Data Output DRAM), SDRAM (Synchronous DRAM), and RDRAM (Rambus DRAM). Flash ROM The flash ROM is designed to be a resident program and can be updated by a specific programming method. Normally, the flash ROM is used for system BIOS which initiates hardware devices and sets up necessary parameters for the OS. Since the contents of flash ROM can be modified, users are able to update the BIOS by themselves. IDE (Integrated Drive Electronics) IDE devices integrate the drive control circuitry directly on the drive itself, eliminating the need for a separate adapter card (in the case for SCSI devices). UltraDMA/ 33 IDE devices can achieve up to 33MB/Sec transfer.

AC PWR Loss Restart 63 Accelerated Graphics Port 25 AGP 25 AGP Slots 25 ASUS PC Probe Using 73 ASUS Update Using 78 ATAPI CD-ROM 65 ATX Power Switch Lead 36 Automatic Power Up 64 CHS Capacity 48 COM 2 Bracket 27 Connectors 1394 Headers 31 Digitial Audio 32 Fan 32 Fast-Ethernet Port 28 Floppy Disk Drive 29 Front Panel (iPanel) 34 IDE 30 Infrared Module 34 Internal Audio 31 iPanel 12 Parallel Port 27 PS/2 Keyboard 26 PS/2 Mouse 26 Serial Port 27 USB 28 Wake-On-LAN 33 Wake-On-Ring 33 CPU Speed 51 CPU Temperature 65 CyberLink PowerDVD 84 PowerPlayer SE 83 VideoLive Mail 85 CyberLink PowerDVD Using 84 CyberLink PowerPlayer SE Using 83 CyberLink VideoLive Mail Using 85 Cylinders 47
BIOS Advanced Menu 51 Beep Code 37 Boot Menu 65 Chip Configuration 54 Device Configuration 56 Exit Menu 67 Hardware Monitor 64 Keyboard Features 49 Main Menu 45 Menu Bar 43 PCI Configuration 58 Power Menu 61 Power Up Control 63 Primary/Sec. Master/Slave 46 Shadow Configuration 60 System Hangup 53 Updating 39 BIOS Beep Codes 37 Boot Sequence 65 Boot Up Floppy Seek 66 Boot Up NumLock Status 49 Boot Virus Detection 66
Digital Audio Connector 32 Discard Changes 68
Central Processing Unit 19
ECP DMA Select 57 Exit Discarding Changes 67
Exit Saving Changes 67 Expansion Cards 24 AGP 4X 25 Assigning IRQs 24
Keyboard Lock Switch Lead 36
LAN 9 Legacy Diskette A 45 Legacy Diskette B 45 Load Setup Defaults 68
Fan Connectors 32 Fast-Ethernet Port Connector 28 Floppy 3 Mode Support 45 Floppy Disk Drive Connector 29 Front Panel Connectors 34
Maximum LBA Capacity 48 MB Temperature 65 Memory Hole At 15M-16M 55 Multi-Sector Transfers 48

Getting Started 16

Halt On 50 Hardware Setup CPU Installation 19 HDD Power Down 62 Head 48 Headers USB 30
Onboard AC97 Controller 56 Onboard Parallel Port 57 Onboard PCI IDE Enable 55 Onboard Serial Port 1 & OS/2 Onboard Memory > 64M 52 Other Boot Device Select 65
IDE Activity LED Lead 35 IDE Connectors 30 IDE Hard Drive 65 IEEE-1394 Connector 28 IEEE-1394 Header 31 Infrared Module Connector 15, 34 Installed Memory 50 Installing CPU 19 Internal Audio Connector 31 Interrupts Request Table 25 Standard Assignments 24 iPanel Connectors 34 IRQ XX Used By ISA 59
Parallel Port Connector 27 Parallel Port Mode 57 PCI Latency Timer 58 PCI/VGA Palette Snoop 58 PIO Mode 48 Plug & Play O/S 66 Power Management 61 PowerDVD 84 Using 84 PowerPlayer SE Using 83 Procedures CPU Installation 19
Expansion Card Installation 24 Updating BIOS 40 PS/2 Keyboard Connector 26 PS/2 Mouse Connector 26 PWR Button < 4 Secs 62 PWR Up On Modem Act 63 USB Headers 30 USB Legacy Support 52 Using ASUS PC Probe 73 ASUS Update 78 PowerPlayer SE 83
Quick Power On Self Test 66
VCORE Voltage 64 Video Off Method 62 Video Off Option 62 Video ROM BIOS Shadow 60 VideoLive Mail 85 Using 85 Voltage ++3.+VCORE 64

Intel 850 ATX Motherboard

Quick Setup Manual

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUSTeK COMPUTER INC. (ASUS). ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT. Copyright 2000 ASUSTeK COMPUTER INC. All Rights Reserved.
Product Name: Release Date: ASUS P4T-M December 2000
ASUS P4T-M Quick Setup Manual

1. FEATURES

1.1 P4T-M Motherboard Layout

24.4cm (9.60in)

PS/2KBMS

T: Mouse B: Keyboard

CPU_FAN

Multi I/O

Bottom: Top:

USB1 RJ-45 USB2 COM1

ATX12V
RIMMA1 (16/18 bit, 184-pin module)
RIMMA2 (16/18 bit, 184-pin module)
RIMMB1 (16/18 bit, 184-pin module)
RIMMB2 (16/18 bit, 184-pin module)

Socket 423

PWR_FAN

SECONDARY IDE

GAME_AUDIO

Line Out Line In Mic In

Memory Controller Hub (MCH)

Realtek RTL8139C

AUX_CON

WOLCON

CR2032 3V Lithium Cell CMOS Power
Intel I/O Controller Hub (ICH2)

4Mbit Firmware Hub

NO_REBOOT

Audio Codec

CHA_FAN

AFPANEL

IDELED
Grayed components are available only on certain models at the time of purchase.

PRIMARY IDE

Accelerated Graphics Port (AGP)

FLOPPY

24.4cm (9.6in)

Intel 850

ATX Power Connector

PARALLEL PORT

3. H/W SETUP Motherboard Layout

1.2 Layout Contents

Expansion
1) 2) 3) 4) RIMMA1/A2/B1/B2 CPU PCI1/2/3/4/5 AGPPRO p.18 p.19 p.25 p.26 184-Pin System Memory Support Central Processing Unit (CPU)6 32-bit PCI Bus Expansion Slots Accelerated Graphics Port (AGP Pro) Slot

Connectors

1) PRIMARY/SECONDARY IDE 2) FLOPPY 3 CPU_FAN, PCI_FAN MAIN_FAN 4) WOL 5) USB2 6) IA 7) AFPANEL 8) ATXPWR, AUXPWR, ATX12V 9) PWRLED (PANEL) 10) KEYLOCK (PANEL) 11) SPEAKER (PANEL) 12) MSG.LED (PANEL) 13) SMI (PANEL) 14) PWRSW (PANEL) 15) RESET (PANEL) p.30 Primary/Secondary IDE Connectors (Two 40-1pins) p.30 Floppy Disk Drive Connector (34-1pins) p.31 CPU, PCI, MAIN Fan Connectors (Three 3-pin) p.32 p.32 p.33 p.33 p.34 p.35 p.35 p.35 p.35 p.35 p.35 p.35 Wake-On-LAN Connector (3 pins) USB Header (10-1 pins) Internal Audio (4-pin VIDEO, CD_IN, AUX) Connector (5 pins) ATX 12V Power Supply Connectors System Power LED Lead (3-1 pins) Keyboard Lock Switch Lead (2 pins) System Warning Speaker Connector (4 pins) System Message LED (2 pins) System Management Interrupt Switch Lead (2 pins) ATX Power / Soft-Off Switch Lead (2 pins) Reset Switch Lead (2 pins)

2. HARDWARE SETUP

2.1 Getting Started
IMPORTANT: Due to Pentium 4 CPUs power consumption requirement, an ATX12V power supply is recommended for this motherboard. For typical system configurations, an ATX12V power supply that can supply at least 230W and at least 8.5A on the +12V lead is required. For heavily-loaded configurations, an ATX12V power supply that can supply at least 300W is required. Before using your computer, you must complete the following steps: Check Motherboard Settings Install Memory Modules Install the Central Processing Unit (CPU) Install Expansion Cards Connect Ribbon Cables, Panel Wires, and Power Supply WARNING! Computer motherboards and expansion cards contain very delicate Integrated Circuit (IC) chips. To protect them against damage from static electricity, you should follow some precautions whenever you work on your computer. 1. Unplug your computer when working on the inside. 2. Use a grounded wrist strap before handling computer components. If you do not have one, touch both of your hands to a safely grounded object or to a metal object, such as the power supply case. 3. Hold components by the edges and try not to touch the IC chips, leads or connectors, or other components. 4. Place components on a grounded antistatic pad or on the bag that came with the component whenever the components are separated from the system. 5. Ensure that the ATX power supply is switched off before you plug in or remove the ATX power connector on the motherboard. WARNING! Make sure that you unplug your power supply when adding or removing system components. Failure to do so may cause severe damage to your motherboard, peripherals, and/or components. The onboard LED when lit acts as a reminder that the system is in suspend or soft-off mode and not powered OFF.

2.2 System Memory

NOTE: No hardware or BIOS setup is required after adding or removing memory. This motherboard has four 184-pin Rambus Inline Memory Modules (RIMM) sockets. These sockets support 64Mbit, 128Mbit, and 256Mbit Direct RDRAM technologies.
Location RIMMA1 (Rows 0&1) RIMMA2 (Rows 2&3) RIMMB1 (Rows 4&5) RIMMB2 (Rows 6&7) Memory Module RDRAM C-RIMM (use when socket will not be populated) RDRAM C-RIMM (use when socket will not be populated) RDRAM C-RIMM (use when socket will not be populated) RDRAM C-RIMM (use when socket will not be populated) TOTAL SYSTEM MEMORY

(2GB Max)

Subtotal x1 x1 x1 x1 =
IMPORTANT 1. The memory configuration of channel A (RIMMA1 and RIMMA2) and channel B (RIMMB1 and RIMMB2) must be identical (see below). 2. C-RIMMs (Continuity RIMM) must be used to complete the sockets that are not populated by RDRAMs. A C-RIMM is necessary to avoid breaking the signal lines, which are a serial connection in a Rambus interface, such as used in this motherboard. This assures the electrical integrity of a Rambus interface. 3. When C-RIMMs are required, it is recommended that they be inserted into RIMMA2 and RIMMB2.
C-RIMM 128MB RDRAM C-RIMM 128MB RDRAM RIMMB2 RIMMB1 RIMMA2 RIMMA1
NOTE: When using only two memory modules, it is recommended that you use configuration a.
128MB RDRAM C-RIMM 128MB RDRAM C-RIMM RIMMB2 RIMMB1 RIMMA2 RIMMA1
128MB RDRAM 128MB RDRAM 128MB RDRAM 128MB RDRAM RIMMB2 RIMMB1 RIMMA2 RIMMA1

2.2.1 Installing Memory

The memory module (RIMM/C-RIMM) will fit in only one orientation. IMPORTANT: Do not touch the memory modules connectors. Handle the module only by the edges.

RIMM with Heat Spreader

RIMM Sockets
P4T-M 184-Pin RIMM Sockets
1. Make sure that the notch keys in the module are aligned with the small ribs inside the RIMM sockets.
MOUNTING NOTCH RDRAM (with heat spreader) NOTCH KEYS CONNECTORS
(TOP VIEW) EJECTOR RIBS (inside socket)
2. With the ejectors in the open position (as shown), push down gently but firmly on the memory module until it snaps into place. The guides on the sockets ejectors should go through the two mounting notches on the module and the ejectors should close. If necessary, push the ejectors inward to secure the module in place. Removing Memory To release a memory module, push both ejectors outward and pull the module straight up and out of the RIMM sockets. WARNING! RIMM modules become extremely hot during operation. To reduce the risk of personal injury from hot surfaces, allow the modules to cool off before removing them.

C-RIMM

2.3 Central Processing Unit (CPU)
The motherboard provides a ZIF Socket for the supported CPUs. The CPU that came with the motherboard should have a fan attached to it to prevent overheating. If this is not the case, then purchase a fan before you turn on your system.

Socket 423 Pentium 4

Gold Arrow

P4T-M Socket 423

Before you start, you should check to see that you have the following items: (NOTE: Motherboard layout is not identical to the example.)

Rubber Pad

Metal Baseboard
2 Metal heatsink retaining clips 4 Copper captive nuts

4 Washers

4 Pan Head screws

2 Heatsink support bases

2.3.1 CPU Installation
Step 1: Install the Baseboard
A metal baseboard is required to install the heatsink to the motherboard. A rubber pad is placed between the metal board and motherboard to provide insulation to prevent shorting. (NOTE: Motherboard layout is not identical to the example.)
Align the rubber pad over the metal baseboard so that the holes match. Align the motherboard over the rubber pad and metal baseboard so that the screws on the baseboard match up with the motherboards screw holes.
Rubber Pad Metal Baseboard
Place the four washers over the four screws on the baseboard.
Tighten the four copper captive nuts over the washers.

Copper captive nut

rd erboa

9=IDAH

rbo othe

Washer

IM P O R T A N T : This step is a M U S T! The washers are necessary to prevent shorting.

Step 2: Install the CPU

A. Locate the ZIF socket on the motherboard. B. Unlock the socket by pressing the lever sidesways and then lifting it up to a 90100 angle. C. Align the CPU over the socket such that its notched or marked corner matches the sockets corner near the end of the lever, while making sure that the CPU is parallel to the socket. D. Carefully insert the CPU into the socket until it fits in place. The illustration below shows how to insert a CPU properly. CAUTION! The CPU fits in only one orientation. Do not force the CPU into the socket as it will bend the pins and damage the CPU. It should drop into the socket with minimal pressure. If not, check its orientation or check for bent pins.

E. Secure the CPU into the socket by pushing the socket lever all the way down. You will hear a click indicating that the lever is in place.
Step 3: Install the Heatsink Support Base
Place the two heatsink support base as shown and screw in the four pan head screws.
Step 4: Install the Heatsink
Carefully place the fan heatsink on top of the heatsink support base and connect the fan power cable to the CPU fan connector.
Connect to the CPU fan connector.
Step 5: Install the Heatsink Retaining Clips
Latch one end of the heatsink retaining clip to one of the tabs on the heatsink support base.
Latch the large slotted tab on the clip to the protruding tab on the side of the heatsink support base. Push down on the other end of the heatsink retaining clip until it locks into place. 3
WARNING! Be sure that there is sufficient air circulation across the processors heatsink by regularly checking that your CPU fan is working. Without sufficient circulation, the processor could overheat and damage both the processor and the motherboard. You may install an auxiliary fan, if necessary. NOTE: Do not forget to set the correct Bus Frequency and Multiple (frequency multiple setting is available only on unlocked processors) for your Socket 423 processor or else boot-up may not be possible. Socket 423 processors provide internal thermal sensing so that a socket mounted thermal resistor is not needed.

2.4 Expansion Cards

WARNING! Unplug your power supply when adding or removing expansion cards or other system components. Failure to do so may cause severe damage to both your motherboard and expansion cards (see 3.3 Hardware Setup Procedure for more information).
2.4.1 Expansion Card Installation Procedure
1. Read the documentation for your expansion card and make any necessary hardware or software settings for your expansion card, such as jumpers. 2. Remove your computer systems cover and the bracket plate on the slot you intend to use. Keep the bracket for possible future use. 3. Carefully align the cards connectors and press firmly. 4. Secure the card on the slot with the screw you removed above. 5. Replace the computer systems cover. 6. Set up the BIOS if necessary (such as IRQ xx Used By ISA: Yes in PNP AND PCI SETUP) 7. Install the necessary software drivers for your expansion card.
2.4.2 Assigning IRQs for Expansion Cards
Some expansion cards need an IRQ to operate. Generally, an IRQ must be exclusively assigned to one use. In a standard design, there are 16 IRQs available but most of them are already in use, leaving 6 IRQs free for expansion cards. If your motherboard has PCI audio onboard, an additional IRQ will be used. If your motherboard also has MIDI enabled, another IRQ will be used, leaving 4 IRQs free.

Standard Interrupt Assignments
IRQ Priority Standard Function System Timer Keyboard Controller 2 N/A Programmable Interrupt 3* 11 Communications Port (COM2) 4* 12 Communications Port (COM1) 5* 13 Sound Card (sometimes LPT2) Floppy Disk Controller 7* 15 Printer Port (LPT1) System CMOS/Real Time Clock 9* 4 ACPI Mode when enabled 10* 5 IRQ Holder for PCI Steering 11* 6 IRQ Holder for PCI Steering 12* 7 PS/2 Compatible Mouse Port Numeric Data Processor 14* 9 Primary IDE Channel 15* 10 Secondary IDE Channel *These IRQs are usually available for ISA or PCI devices.
Interrupt Request Table for this Motherboard
PCI slot 1 PCI slot 2 PCI slot 3 AGP slot USB HC0 USB HC1 SMB AC97 LAN (8139C) INT-A used INT-B shared shared INT-C INT-D used INT-E INT-F shared shared INT-G used INT-H shared shared
IMPORTANT: If using PCI cards on shared slots, make sure that the drivers support Share IRQ or that the cards do not need IRQ assignments. Conflicts will arise between the two PCI groups that will make the system unstable or cards inoperable.
2.4.3 Accelerated Graphics Port (AGP) Pro Slot
This motherboard provides an accelerated graphics port (AGP) pro slot to support a new generation of AGP graphics cards with ultra-high memory bandwidth.
P4T-M Accelerated Graphics Port (AGP)
CAUTION! The AGP Pro slot is shipped with a warning label over the 20-pin bay. DO NOT remove this label and the safety tab underneath it if you will be using an AGP card without a retention notch. Removing may cause the card to shift and may cause damage to your card, slot, and motherboard. Remove ONLY when you will be using an AGP Pro card. Use a rigid tip, such as a pen tip, to dislodge and remove the tab from the bay.

Removing the tab

2.5 Onboard Connectors
1) Primary (Blue) / Secondary IDE Connectors (Two 40-1pin IDE) These connectors support the provided IDE hard disk ribbon cable. Connect the cables blue connector to the motherboards primary (recommended) or secondary IDE connector, and then connect the gray connector to your UltraDMA/100 slave device (hard disk drive) and the black connector to your UltraDMA/100 master device. It is recommended that non-UltraDMA/100 devices be connected to the secondary IDE connector. If you install two hard disks, you must configure the second drive to Slave mode by setting its jumper accordingly. Please refer to your hard disk documentation for the jumper settings. BIOS now supports specific device bootup (see 4.6 Boot Menu). (Pin 20 is removed to prevent inserting in the wrong orientation when using ribbon cables with pin 20 plugged). TIP: You may configure two hard disks to be both Masters with two ribbon cables one for the primary IDE connector and another for the secondary IDE connector. You may install one operating system on an IDE drive and another on a SCSI drive and select the boot disk through 4.6 Boot Menu. IMPORTANT: UltraDMA/100 IDE devices must use a 40-pin 80-conductor IDE cable for 100MByte/sec transfer rates.

Secondary IDE Connector Primary IDE Connector
NOTE: Orient the red markings (usually zigzag) on the IDE ribbon cable to PIN 1.

P4T-M IDE Connectors

2) Floppy Disk Drive Connector (34-1pin FLOPPY) This connector supports the provided floppy drive ribbon cable. After connecting the single end to the board, connect the two plugs on the other end to the floppy drives. (Pin 5 is removed to prevent inserting in the wrong orientation when using ribbon cables with pin 5 plugged).
NOTE: Orient the red markings on the floppy ribbon cable to PIN 1.
P4T-M Floppy Disk Drive Connector
3) Chassis (PCI_FAN), CPU (CPU_FAN), Power Supply (MAIN_FAN) Fan Connectors (3 pins) These connectors support cooling fans of 350mA (4.2 Watts) or less. Orientate the fans so that the heat sink fins allow airflow to go across the onboard heat sink(s) instead of the expansion slots. Depending on the fan manufacturer, the wiring and plug may be different. The red wire should be positive, while the black should be ground. Connect the fans plug to the board taking into consideration the polarity of the connector. NOTE: The Rotation signal is to be used only by a specially designed fan with rotation signal. The Rotations per Minute (RPM) can monitored using a utility such as ASUS PC Probe or Intel LDCM. WARNING! The CPU and/or motherboard will overheat if there is no airflow across the CPU and onboard heatsinks. Damage may occur to the motherboard and/or the CPU fan if these pins are incorrectly used. These are not jumpers, do not place jumper caps over these pins.

Rotation +12V GND

GND +12V Rotation
P4T-M 12-Volt Cooling Fan Power
4) Wake-On-LAN Connector (3-pin WOL) This connector connects to a LAN card with a Wake-On-LAN output, such as the ASUS PCI-L101 Ethernet card (see 7. Appendix). The connector powers up the system when a wakeup packet or signal is received through the LAN card. IMPORTANT: This feature requires that Wake On LAN or PCI Modem is enabled (see 4.5.1 Power Up Control) and that your system has an ATX power supply with at least 720mA +5V standby power.
IMPORTANT: Requires an ATX power supply with at least 720mA +5 volt standby power

WOL_CON

Ground

PME +5 Volt Standby

P4T-M Wake-On-LAN Connector
5) USB Headers (10-1 pin USB2) If the USB Ports on the back panels are inadequate, a USB header is available for two additional USB ports. Connect the 10-1 pin ribbon cable from the provided 2-port USB connector set to the midboard 10-1 pin USB header and mount the USB connector set to an open slot on your chassis.
1: USB Power 2: USBP2 3: USBP2+ 4: GND 5: NC
6: USB Power 7: USBP3 8: USBP3+ 9: GND

P4T-M USB Headers

6) Internal Audio Connectors (4-pin VIDEO, CD_IN, AUX) These connectors allow you to receive stereo audio input from such audio-visual sources as a VIDEO or CD-ROM input, or MPEG card.

VIDEO AUX_CON

Left Audio Channel Ground Ground Right Audio Channel
P4T-M Internal Audio Connectors
7) Front-Panel Connectors (12-pin AFPANEL) Theis connector allows you to setup an optional ASUS ipanel, an easy to access operational console mounted in a standard front drive bay. The iPanel offers front I/O ports, status LEDs and space reserved for a hard disk drive. If you are not using an ASUS iPanel, you can connect an optional wireless transmitting and receiving infrared module to the SIR connector or an optional consumer infrared connector set to the CIR and SIR connectors for both wireless transmitting and remote control functions through one external infrared module.
IRRX GND IRTX SMBDATA +3VSB SMBCLK LOCKKEY NC NC NC IRRX GND IRTX +5 V

SIR CIR

NC GND NC CIRRX +5VSB
NC GND NC CIRRX +5VSB CHASSIS# EXTSMI# +5V MLEDPCIRST# BATT NC
Standard Infrared (SIR) Front View Back View

IR_CON

P4T-M Front Panel Connectors

IRTX GND IRRX +5V (NC)

8) Power Supply Connectors
(20-pin block ATXPWR) (6-pin AUXPWR) (4-pin ATX12V) These connectors connect to an ATX 12V power supply. Each plug from the power supply will only insert in one orientation because of the different hole sizes. Find the proper orientation and push down firmly making sure that the pins are aligned. An auxiliary power supply may be needed depending on your system configuration.
IMPORTANT: Make sure that your ATX 12V power supply (minimum recommended wattage: 230 watts; 300W for a fully-configured system) can supply at least 20 amperes on the +5-volt lead and at least 720mA on the +5-volt standby lead (+5VSB). Your system may become unstable/unreliable and may experience difficulty in powering up if your power supply is inadequate. For WakeOn-LAN support, your ATX power supply (minimum recommended wattage: 230watts) must supply at least 720mA +5VSB.

Pin 1 COM +12V DC

COM +12V DC

ATX12V ATXPWR

Pin 1 +3.3VDC +3.3VDC COM +5VDC COM +5VDC COM PWR_OK +5VSB +12VDC +3.3VDC -12VDC COM PS_ON# COM COM COM -5VDC +5VDC +5VDC
P4T-M ATX & Auxiliary Power Connectors
The following is for items 1521

Keyboard Lock Power LED

PLED Keylock Ground +5 V

Speaker Connector

+5V Ground Ground Speaker
+5 V MLED ExtSMI# Ground PWR Ground

Message LED

Reset SW ATX Power Switch*

SMI Lead

* Requires an ATX power supply.
P4T-M System Panel Connectors
9) System Power LED Lead (3-1 pin PWRLED) This 3-1 pin connector connects the system power LED, which lights when the system is powered on and blinks when it is in sleep mode. 10) Keyboard Lock Switch Lead (2-pin KEYLOCK) This 2-pin connector connects to the case-mounted key switch to allow keyboard locking. 11) System Warning Speaker Connector (4-pin SPEAKER) This 4-pin connector connects to the case-mounted speaker. Two sources (LINE_OUT and SPEAKER) will allow you to hear system beeps and warnings. Only SPEAKER will allow you to hear system beeps before the integrated audio has been properly initialized. 12) System Message LED Lead (2-pin MSG.LED) This indicates whether a message has been received from a fax/modem. The LED will remain lit when there is no signal and blink when there is data received. This function requires an ACPI OS and driver support. 13) System Management Interrupt Lead (2-pin SMI) This allows the user to manually place the system into a suspend mode or Green mode, where system activity is decreased to save electricity and expand the life of certain components when the system is not in use. This 2-pin connector connects to the case-mounted suspend switch. 14) ATX Power Switch Lead (2-pin PWRSW) The system power is controlled by a momentary switch connected to this lead. Pressing the button once will switch the system between ON and SOFT OFF. Pushing the switch while in the ON mode for more than 4 seconds will turn the system off. The system power LED shows the status of the systems power. 15so1) Reset Switch Lead (2-pin RESET) This 2-pin connector connects to the case-mounted reset switch for rebooting your computer without having to turn off your power switch. This is a preferred method of rebooting to prolong the life of the systems power supply.