Intel(R) Corporation

Intel® Desktop Board LT430TX

The products you are looking for are no longer manufactured by Intel. Additionally, Intel no longer provides interactive support for these products via telephone or e-mail, nor will Intel provide any future content updates or software updates to support new operating systems or improve compatibility with third party devices and software products.

THESE PRODUCT SUPPORT DOCUMENTS ARE PROVIDED FOR HISTORICAL REFERENCE ONLY AND ARE SUBJECT TO THE TERMS SET FORTH IN THE "TERMS OF USE" INFORMATION.

Information on currently available Intel products is available at www.intel.com and/or developer.intel.com

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+ Software and drivers
Bios and drivers

+ Product Documentation
icon Technical Product Specification
icon Specification Update

+ Compatibility
+Supported processors

The Intel® Desktop Board LT430TX supports these Intel® Pentium® Processors.

Processor Family

Processor Speed

Pentium Processors

90 MHz
100 MHz
120 MHz
133 MHz
150 MHz
166 MHz
200 MHz

Pentium Processors
With MMX™ Technology

166 MHz
200 MHz
233 MHz



Changing the processor requires changes in several jumper settings.

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


+System memory

System Memory Combinations
The motherboard has two dual inline memory module (DIMM) sockets. Minimum memory size is 16 MB; maximum memory size is 256 MB. The BIOS automatically detects memory type, size, and speed.

The motherboard supports the following memory features:
  • 168-pin DIMMs with gold-plated contacts
  • 66 MHz SDRAM only
  • Non-ECC (64-bit) and ECC (72-bit) memory
  • 3.3 V memory only
  • Single- or double-sided DIMMs in the following sizes
DIMM Size Non-ECC Configuration ECC Configuration
16 MB 2M x 64 2M x 72
32 MB 4M x 64 4M x 72
64 MB 8M x 64 8M x 72
128 MB 16M x 64 16M x 72

Memory can be installed in one or two sockets. Memory size can vary between sockets.

Note: To function properly, SDRAM DIMMs must meet the Intel 4-clock, 66 MHz, unbuffered SDRAM specification for either 64-bit or 72-bit SDRAM. See the Technical Product Specification above for information about these specifications.

DIMM Vendors - Web Sites
The list below contains vendors that have tested their memory for Intel® LM440LX Motherboards, and that 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 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 # Comments
2 X 64 (16MB)  Non-parity 4CLK, 66MHz
Micron* Technology FULL MT8LSDT264AG-662C1
Micron* Technology FULL MT8LSDT264AG-66CL2
Samsung* FULL KMM366S203BTL-G2
4M x 64 (32 MB) Non-parity 4CLK, 66MHz
Micron* Technology FULL MT16LSDT464AG-662C1
Micron* Technology FULL MT16LSDT464AG-66CL2
NEC* FULL MC-454AD644F-A67
8M x 64 (64 MB)  Non-parity 4CLK, 66MHz
NEC Electronics* FULL MC458CB644A10
Samsung* FULL KMM366S823ATL-G2
16M x 64 (128 MB) Non-parity 4CLK, 66MHz
NEC Electronics* FULL MC4516AD644FA10


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 mode does not appear.

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 ECC 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 # Comments
2 X 72 (16MB) Parity 4CLK, 66MHz
Micron Technology FULL MT9LSDT272AG-662C1
4M x 72 (32 MB) Parity 4CLK, 66MHz
Micron Technology FULL MT18LSDT472AG-662C1
8M x 72 (64 MB) Parity 4CLK, 66MHz


+ Installation and use
+Last known issues
End of Interactive Support
Intel is announcing the end of interactive support for the Intel® LT430TX Motherboard. See the End of Interactive Support Announcement for details.



Latest BIOS and drivers
The Intel® LT430TX Motherboard BIOS identifier is 4L3TT0X0.86A.

Contact your system provider for any bus mastering drivers specific to your configuration. Additional Intel® Bus Master IDE information can be found on the developer.intel.com site.


Processors Supported
The Intel LT430TX Motherboard supports Pentium® processors at 90, 100, 120, 133, 150, 166 and 200 MHz, as well as Pentium processors with MMX™ technology running at 166, 200 and 233 MHz. Changing the processor requires changes in several jumper settings.

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


Supported Memory
Information on supported memory is available in the compatibility section above.


Windows* 95 Power-Down Issues
Intel has received reports from users who have experienced system hangs or long delays when shutting down from Windows* 95.


Windows* 95 with CD-ROM or Second Hard Drive
Having problems with Windows* 95 and a CD-ROM or second hard drive? There are two known issues that may be affecting your system: you may need to update Windows 95 to recognize the Intel 82371AB PIIX4 IDE Controller, or your IDE CD-ROM may not comply with the ATAPI specification.


Booting From Large IDE Hard Drives
Some large IDE drives may not initialize quick enough for the system to boot. Try setting the "Quick Boot" option in the BIOS Setup utility to disable. Another option is to warm boot the system by pressing CTRL-ALT-DELETE when the "No Operating System Found" message appears. A "hard disk pre-delay " option is planned for a future BIOS to resolve this issue.


Yellow Question Marks in Configuration Manager
Seeing yellow question marks in the Windows 95 Configuration Manager next to the entries for the PCI-ISA bridge and the Power Management PIIX4 device? This suggests you may need to run the Intel® Chipset Software Installation Utility to update Windows 95 to recognize the IDE Controller.


USB Device Cannot be Disabled
It is not possible to disable the USB Device in the PIIX4 IDE Controller. This device always will appear in the Windows 95 Configuration Manager. The resources cannot be released for use by other devices.


Motherboard Won't Power Up
If the motherboard won't power up, or the fan turns on for one second then shuts down, ensure you are using a momentary switch for the sleep/resume feature. The result may be the board getting stuck in sleep mode. Use the correct type of switch and remove the battery for 20 minutes to clear the flip-flop that controls sleep mode.


Turning Power Off During POST
Turning your system power off may take up to four seconds while the BIOS is performing the Power On Self Test (POST). Simply depress and hold the power on/off button until the system powers down.


DMI 2.0 Compliance
The Intel LT430TX Motherboard was designed to comply with the Desktop Management Interface (DMI) 2.0 specification. Details about conformance and testingare available from the Desktop Management Task Force (DMTF) website.


Will My ATA-66 Hard Drive Work on the Intel LT430TX Motherboard?
The IDE controller integrated into the Intel LT430TX Motherboard supports Ultra DMA modes 0,1, and 2. Ultra DMA mode 2, also known as ATA-33 or Ultra DAM 33, is the highest speed transfer mode supported by the Intel LT430TX Motherboard. The motherboard hardware cannot support the maximum transfer rate of the ATA-66 drives. A drive that complies with the ATA-66 specification will run timings up to Ultra ATA-33 on the Intel LT430TX Motherboard. Please refer to the Technical Product Specification in the Product documentation section above for more complete details on the various transfer modes.



+Additional information

For technical support, contact your place of purchase -- which will have the most current information about your specific product or configuration. You also can check the Intel FAQ for that product.

Frequently Asked Questions: Intel LT430TX Motherboard

What Pentium® processors are supported on the Intel LT430TX Motherboard?
The Intel LT430TX Motherboard supports Pentium processors at 90, 100, 120, 133, 150, 166 and 200 MHz, as well as Pentium processors with MMX™ technology running at 166, 200 and 233 MHz. Changing the processor requires changes in several jumper settings.

Changing the processor requires changes in several jumper settings.

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

How should the switches and jumpers be set on my motherboard?
On-board switches and jumpers control the configuration options and other features of the motherboard.

Why does my Intel LT430TX Motherboard not power-up?
The Intel LT430TX Motherboard requires 3.3 volts from the power supply. A momentary switch should be used for the for the power on/off switch and the sleep/resume switch.

Is it possible to have a second serial port on the Intel LT430TX Motherboard?
The Intel LT430TX Motherboard has one serial port located on the ATX I/O back panel and a motherboard header for cabling a second serial port. The location of this second serial port connector can be found in the Intel LT430TX Motherboard connectors document.

Does the Intel LT430TX Motherboard support UltraDMA drives under Windows* 95?
Some versions of Windows 95 are unable to completely identify the 82371AB (PIIX4) and 82439TX (MTXC) components on the Intel LT430TX Motherboard. A utility is available to update the MSHDC.INF and MACHINE.INF files. After this utility has been run, the enhanced functions of the PIIX4 IDE controller can be accessed.

Why do I get a yellow question mark in Windows 95's Device Manager?
Even after the INF update utility has been run, a single yellow question mark icon (PCI Card) may still remain under the Other Devices section in the Windows 95 Control Panel / System Properties / Device Manager. This yellow question mark indicates that the USB function of the PIIX4 component has been identified, but Windows 95 does not have a driver for this function. There is no current method to remove this yellow question mark from the Device Manager screen. This yellow question mark does not indicate any problems with the system, but simply that the USB function of the PIIX4 controller is not active.