Intel(R) Corporation
Intel® Desktop Board MU440EX

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Software and drivers
Bios and drivers

Product Documentation
icon Technical Product Specification
icon Specification Update

Compatibility
Supported processors

Different versions of the Intel® MU440EX Motherboard provide different processor support.

A small barcoded label, similar to the diagram shown below, can be found on the component side of the motherboard. The numbers following the letters "PBA" or "AA " can help identify the version of your motherboard.

barcode

Also note whether your BIOS version is 4M4UE0X1 or 4M4UE0X3.

After locating the PBA or AA number and BIOS version, consult the tables below to determine which processors are supported by that motherboard:

Supports only Intel® Celeron® processors 266, 300, 300A, 333, 366, and 400 MHz:

AA Number PBA Number BIOS Version
698722-402 695747-402 4M4UE0X1
702993-402 695747-402 4M4UE0X1
702999-402 695747-402 4M4UE0X1
698722-403 695747-403 4M4UE0X1
702993-403 695747-403 4M4UE0X1
702999-403 695747-403 4M4UE0X1
698722-404 695747-404 4M4UE0X1
702993-404 695747-404 4M4UE0X1
702999-404 695747-404 4M4UE0X1


Supports both Pentium II processors with 66 MHz Front Side Bus and Intel Celeron processors 266, 300, 300A, 333, 366 and 400 MHz:

Note 1: In the table below, support is available beginning at the -xxx level shown and any subsequent -xxx revisions.

Note 2: Support for Intel Celeron processors 300A, 333, 366 or 400 MHz requires either BIOS 4M4UE0X1.86A.0011.P10 or later or BIOS 4M4UE0X3.86A.0004.P03 or later--depending on which version (4M4UE0X1 or 4M4UE0X3) matches your board.

AA Number
(see note 1)		 PBA Number
(see note 1)		 BIOS Version
698722-405 695747-405 4M4UE0X1
702993-405 695747-405 4M4UE0X1
702999-405 695747-405 4M4UE0X1
718611-404 713826-404 4M4UE0X1
716192-404 716190-404 4M4UE0X1
718619-405 718658-405 4M4UE0X3
718631-405 718658-405 4M4UE0X3
718659-405 718658-405 4M4UE0X3

Warning: Processors not specifically listed by type and rated speed may have requirements that are not supported by the motherboard's design. Use of unsupported processors may result in improper operation, damage to the motherboard or processor or reduced product life.



System memory

Contents

System Memory Combinations
The motherboard has two DIMM sockets. SDRAM can be installed in one or both sockets. In addition, the motherboard supports both serial presence detect (SPD) and non-SPD data structures.

Using the SPD data structure programmed into an E2PROM on the DIMM, the BIOS can determine the SDRAM's size and speed. When using the non-SPD data structure, the BIOS must dynamically determine SDRAM size.

Minimum memory size is 8 MB; maximum memory size is 256 MB. Memory size can vary between sockets.

The motherboard supports the following memory features:

  • 168-pin DIMMs with gold-plated contacts
  • 66 MHz, 4 Clock SDRAM
  • Non-error checking and correcting (ECC) (64-bit) memory
  • Unbuffered single- or double-sided DIMMs in the following sizes:

Non-ECC Configuration
8M 1M x 64
16 MB 2M x 64
32 MB 4M x 64
64 MB 8M x 64
128 MB 16M x 64

Note: The motherboard supports DIMMs with an ECC configuration; however, ECC features cannot be enabled.

Note: All memory components and DIMMs used with the Intel® MU440EX motherboard must comply with the PC SDRAM specifications. These include the PC SDRAM Specification (memory component specific) and the PC Unbuffered DIMM Specification. When using a DIMM with the SPD data structure, the DIMM must comply with the PC Serial Presence Detect Specification. See the Technical Product Specification for information about these specifications.

DIMM Vendors - Web Sites
The list below contains vendors that have tested their memory for Intel® MU440EX Motherboards and have their products listed on their own website. Please visit their sites to obtain information on their products.



DIMM Vendors - SDRAM Non-ECC DIMMs
The following tables list DIMMs that have been tested. DIMMs not listed should also function properly as long as their specifications are compatible with the devices listed below. In general, DIMM devices that are faster than those specified for a given platform will work, although no extra performance will be realized.

Vendor* Test Vendor Part Number
1M x 64 (8 MB), Unbuffered SDRAM, Non-ECC - 66 MHz
None at this time.    
2M x 64 (16 MB), Unbuffered SDRAM, Non-ECC - 66 MHz
None at this time.    
4M x 64 (32 MB), Unbuffered SDRAM, Non-ECC - 66 MHz
Micron Full MT4LSDT464AG-662B2
NEC Full MT4LSDT464AG-662D1
Samsung Full
 MC-454AD644F-A67
8M x 64 (64 MB), Unbuffered SDRAM, Non-ECC - 66 MHz
Micron Full MT8LSDT864AG-662D3
NEC Full MC458CB645FAA10
Samsung Full KMM366S823BTL-G0
16M x 64 (128 MB), Unbuffered SDRAM, Non-ECC - 66 MHz
None at this time.    


DIMM Vendors - SDRAM ECC DIMMs
Error checking and correcting ECC memory detects multiple-bit errors and corrects single-bit errors. When ECC memory is installed, the BIOS supports both ECC and non-ECC mode. ECC mode is enabled in the Setup program. The BIOS automatically detects if ECC memory is installed and provides the Setup option for selecting ECC mode. If any non-ECC memory is installed, the Setup option for ECC configuration does not appear and ECC operation is not available.

The following table describes the effect of using Setup to put each memory type in each supported mode. Whenever ECC mode is selected in Setup, some performance loss occurs.

Memory Error Detection Mode Established in Setup Program
  EC Disabled ECC Enabled
Non-ECC DIMM No error detection N/A
ECC DIMM No error detection Single-bit error correction,
multiple-bit error detection


The following tables list DIMMs that have been tested. DIMMs that are not listed should also function properly as long as their specifications are compatible with the devices listed below. In general, DIMM devices that are faster than those specified for a given platform will work, although no extra performance will be realized.

Vendor* Test Vendor Part Number
2M x 72 (16 MB), Unbuffered SDRAM, ECC - 66MHz
None at this time.    
4M x 72 (32 MB), Unbuffered SDRAM, ECC - 66MHz
Micron Full MT5LSDT472AG-662B1
8Mbit x 72 (64 MB), Unbuffered SDRAM, ECC - 66MHz
Micron Full MT9LSDTAG-662D3
4M x 72 (82 MB), Unbuffered SDRAM, ECC - 66MHz
None at this time.    
16Mbit x 72 (128 MB), Unbuffered SDRAM, ECC - 66MHz
None at this time.    


Installation and use
Last known issues

Accelerated Graphics Port (AGP)
AGP (Accelerated Graphic Port) is a dedicated graphics bus with higher bandwidth that allows texturing from main memory. By providing high-bandwidth access to memory, AGP enables a new level of sophisticated graphics that allows software developers to create richer, more inviting 3D environments with higher resolutions than ever before.

AGP support requires the Intel® 440BX AGPset, Intel® 440LX AGPset or Intel® 440EX AGPset (a dedicated AGP slot or AGP graphic controller on the motherboard) and several other designed-in characteristics.

Current Intel® boxed motherboards offering AGP connectors are:
  • Intel® SE440BX Motherboard
  • Intel® AL440LX Motherboard
  • Intel® DK440LX Motherboard
Note: The Intel® MU440EX boxed Motherboard offers an integrated 2X AGP graphics.

Why is interrupt IRQ9 not available to assign to my ISA add-in card?
IRQ9 is not available to ISA devices because it is dedicated to the power management function on the PIIX4E device on the MU440EX motherboard. This is also true for other motherboards that use the PIIX4E device.

Does the Intel MU440EX Motherboard support MMX™ technology?

Yes. The Intel® MU440EX motherboard is designed for both the Intel® Pentium II and the Intel® Celeron® processor that combine the performance of dual independent bus (DIB) and MMX technology resulting in a more realistic media experience.

What hardware is needed to integrate a boxed Intel® Pentium II or Intel Celeron processor with a boxed Intel MU440EX Motherboard?

All required processor integration materials are provided, including processor retention mechanism, cables, I/O shield, software drivers and complete documentation to assist in proper integration.

How much video memory is supported on the Intel MU440EX Motherboard?

There are two different versions of the Intel MU440EX Motherboard. The 1xAGP version has 2MB of SGRAM and the BIOS identifier is 4M4UE0X1. The 2xAGP version has 4MB of SGRAM and the BIOS identifier is 4M4UE0X3. There is no upgrade for the onboard graphics memory on these motherboards.

Why does the custom "User Logo " (displayed at boot time) get erased when the BIOS is updated, and how can the logo be reprogrammed when the BIOS is updated?

The Phoenix BIOS is designed to always clear the User Logo flash area when the BIOS is updated. There are several reasons for this requirement, some of which are related to flash security, manufacturing quality and service return processing.

Some customers ship configured systems with their own identifying logo (displayed at boot time) installed during system integration in their factory. After the system has been distributed to the field, it is possible that BIOS updates may be made available from Intel. Updating the system BIOS with only the files distributed by Intel® erases the logo.

If a customer wants their User Logo to be maintained after updating the BIOS (i.e. at the field location), the logo area must be reprogrammed with the custom User Logo, using the iflash utility. This can be accomplished automatically by executing the iflash utility from an AUTOEXEC.BAT file on the update boot diskette after the BIOS is updated. The following AUTOEXEC.BAT automatically updates the BIOS followed by programming the User Logo. The BIOS files and the user logo file must be present on the boot diskette during the update process.

Note: Only the executable lines are required.

AUTOEXEC.BAT COMMENTS
@echo off beep alerts user to activity in progress
echo Programming system BIOS informs user BIOS is going to be updated
iflash /P pxx-xxxx.bio updates BIOS
echo BIOS update complete informs user BIOS update is complete
echo Restoring Logo I informs user Logo is going to be restored
pause prompts user to continue
iflash /p Logodata.usr programs "User Logo"
echo Update complete informs user the Update is complete


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