Updated: Thursday, March 27, 1997

Contents
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.

• What Pentium(r) processors are supported on the TC430HX?
• How much system memory does the TC430HX support?
• How do I upgrade to the latest BIOS for the TC430HX?
• How should the switches and jumpers be set on my motherboard?
• Why does my TC430HX not power-up?
• Why doesn't my CD-ROM or second IDE hard drive work with Windows* 95?
• What is the difference between ECC and parity memory on the TC430HX?
• Is it possible to have a second serial port on the TC430HX?
• Which IDE connector is the primary interface and which is the secondary interface?
• Where can I get the Motherboard Specification Update?

Frequently Asked Questions: TC430HX

• What Pentium(r) processors are supported on the TC430HX?
  The TC430HX supports Pentium processors at 75, 90, 100, 120, 133, 150, 166, 180 and 200 Mhz, as well as Pentium processors with MMX™ technology. Changing the processor requires changes in several jumper settings.
  

• How much system memory does the TC430HX support?
  The TC430HX motherboard supports up to 128 MB of system memory. Please note that the packaging on some TC430HX boxed motherboards (single board box) incorrectly states that the motherboard supports up to 256MB of system memory.
  

• How do I upgrade to the latest BIOS for the TC430HX?
  BIOS upgrade files for standard Intel products are available via FTP from ftp.intel.com or may be downloaded from the Intel BBS. The BIOS identifier for the TC430HX motherboard is DH0. Also see the general instructions for BIOS upgrades.
  

• 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. Check the jumpers document for the TC430HX motherboard.
  

• Why does does my TC430HX not power-up?
  The TC430HX 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.
  Please refer to the TC430HX ATX Motherboard Technical Product Specification and order the TC430HX Motherboard Specification Update from Intel Literature for more details.
  

• Why doesn't my CD-ROM or second IDE hard drive work with Windows* 95?
  There are two known issues involving CD-ROM drives:
  • The retail version of Microsoft Windows* 95 may not recognize the Intel 82371SB PIIX3 IDE controller used on Intel motherboards, causing the BIOS to disable the secondary IDE channel. This can result in IDE devices (such as CD-ROM drives) not being detected or disappearing after the system is rebooted. A utility is available to update the MSHDC.INF file and resolve the issue.
  • Windows 95 also may fail to recognize a CD-ROM drive that does not comply with the ATAPI specification. A technical advisory covers this issue for Intel motherboards using the 82371SB PIIX3 IDE controller.
    

• What is the difference between ECC and parity memory on the TC430HX?
  The TC430HX can use either 36-bit ECC or parity SIMMs. Older 40-bit ECC memory cannot be used due to different pin connections. Since the memory is organized in 64-bit wide path, the eight bits normally used for parity lines can be used for single bit correction, double bit detection ECC or parity error detection. When using parity SIMMs, the BIOS setup utility offers the error detection options of Disabled (no error detection), parity or ECC.

• Is it possible to have a second serial port on the TC430HX?
  The TC430HX 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 TC430HX motherboard connectors document.

• Which IDE connector is the primary interface and which is the secondary interface?
  The primary IDE connector is the one closest to the edge of the motherboard. The TC430HX Motherboard Technical Product Specification (p/n 281820-001) correctly identifies this. However, the TC430HX Motherboard Product Guide (p/n 658098-001, pg. 67) erroneously has the connectors reversed.