A.1 Intel® EM64T

•The motherboard is fully compatible with Intel® Pentium® 4 LGA775processors running on 32-bit operating systems.

• The motherboard comes with a BIOS file that supports EM64T. You can download the latest BIOS file from the ASUS website (www.asus. com/support/download/) if you need to update the BIOS file. See Chapter 2 for details.

•Visit www.intel.com for more information on the EM64T feature.•Visit www.microsoft.com for more information on Windows® 64-bit OS.

Usi ng the I ntel ® EM64T feature

To use the Intel® EM64T feature:1.Install an Intel® Pentium® 4 CPU that supports the Intel® EM64T.2.Install a 64-bit operating system (Windows® XP Professional x64 Edition).

3.Install the 64-bit drivers for the motherboard components and devices from the support CD.

4.Install the 64-bit drivers for expansion cards or add-on devices, if any.

Refer to the expansion card or add-on device(s) documentation, or visit the related website, to verify if the card/device supports a 64-bit system.

A.2 Enhanced Intel SpeedStep®

Technology (EIST)

•The motherboard comes with a BIOS file that supports EIST. You

can download the latest BIOS file from the ASUS website (www. asus.com/support/download/) if you need to update the BIOS. See Chapter 2 for details.

•Visit www.intel.com for more information on the EIST feature.

A.2.1 System requi rements

Before using EIST, check your system if it meets the following requirements:•Intel® Pentium® 4 processor with EIST support•BIOS file with EIST support

•Operating system with EIST support (Windows® XP SP2/Linux 2.6 kernel or later versions)

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Appendix: CPU features