User manual AOPEN MX46800N

[. . . ] MX46-800N / MX46-800L Online Manual MX46-800N / MX46-800L DOC. NO. : MX46800N-OL-E0403C 1 MX46-800N / MX46-800L What's in this manual Online Manual MX46-800N / MX46-800L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 What's in this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 You Must Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] These fuses are soldered onboard so that when it is broken (function to protect motherboard), user cannot replace them and result in malfunction of motherboard. With expensive Resetable Fuse, the motherboard can be resumed back to normal function even after the fuse had done its protection job. Resetable Fuse 52 MX46-800N / MX46-800L Low ESR Capacitor Online Manual The quality of low ESR capacitor (Low Equivalent Series Resistance) during high frequency operation is very important for the stability of CPU power. The idea of where to put these capacitors is another know-how that requires experience and detail calculation. Not only that, MX46-800N / MX46-800L implements 2200F capacitors, which are much larger than normal capacitor (1000 & 1500F) and provide better stability for CPU power. 53 MX46-800N / MX46-800L Online Manual The power circuit of the CPU core voltage must be checked to ensure system stability for high speed CPUs (such as the new Pentium III, or when overclocking). A typical CPU core voltage is 2. 0V, so a good design should control voltage between 1. 860V and 2. 140V. That is, the transient must be below 280mV. Below is a timing diagram captured by a Digital Storage Scope, it shows the voltage transient is only 143mv even when maximum 60A current is applied. Note: This diagram for example only; it may not be exactly the same as the motherboard you purchased. 54 MX46-800N / MX46-800L Online Manual Phoenix Award BIOS System parameters can be modified by going into BIOS Setup menu, this menu allows you to configure the system parameters and save the configuration into the 128 bytes CMOS area, (normally in the RTC chip or in the main chipset). The Phoenix AwardBIOSTM that installed in the Flash ROM of the motherboard is a custom version of an industry standard BIOS. The BIOS provides critical low-level support for standard devices such as hard disk drives, serial and parallel ports. Most BIOS setting of this model had been optimized by AOpen's R&D engineering team. But, the default setting of BIOS still can't fine-tune the chipset controlling the entire system. Hence, the rest of this chapter is intended to guide you through the process of configuring your system using setup procedures. To enter to BIOS setup menu, press <Del> when POST (Power-On Self Test) screen is shown on your monitor. Note: Because the BIOS code is the most often changed part of the motherboard design, the BIOS information contained in this manual may be different with actual BIOS that come with your motherboard. To obtain the latest version of BIOS, please download it from our website. 55 MX46-800N / MX46-800L About BIOS Function Description. . . Online Manual AOpen always dedicates to give user a more friendly computer system. Now, we include all function descriptions of BIOS setup program into the BIOS Flash ROM. When you select one function of BIOS setup program, the function description will appear at the right side of screen. Therefore, you don't need to read this manual while you change BIOS settings. Menu Items Select Window Item Function Description Window 56 MX46-800N / MX46-800L How To Use Phoenix AwardTM BIOS Setup Program Online Manual Generally, you can use arrow keys to highlight items that you want to choose, then press <Enter> key to select, and use the <Page Up> and <Page Down> key to change setting values. You can press <Esc> key to quit Phoenix-AwardTM BIOS setup program. The following table provides details about how to use keyboard in the Phoenix-Award BIOS setup program. Alternatively, it's strongly recommended to install AOpen's newest WinBIOS Utility to get more detailed description, further powerful functions and advanced setting of BIOS. Key Page Up or + Page Down or Enter Esc Description Changing setting to next value or increase the value. Changing setting to previous value or decrease value. [. . . ] For example: Part No. Serial No. Part No. P/N: 91. 88110. 201 is part number, S/N: 91949378KN73 is serial number. 103 MX46-800N / MX46-800L Model name and BIOS version Online Manual Model name and BIOS version can be found on upper left corner of first boot screen (POST screen). For example: MX46-800N R1. 20 Sep 01. 2003 AOpen Inc. Award Plug and Play BIOS Extension v1. 0A Copyright © 2003, Award Software, Inc. MX46-800N is model name of motherboard; R1. 20 is BIOS version. 104 MX46-800N / MX46-800L Online Manual Product Registration Thank you for choosing AOpen product. AOpen encourages you to spend few minutes in completing the following product registration. [. . . ]