User manual AOPEN AX4BG2

[. . . ] Overview Hardware Installation Troubleshooting & Technical Support Drivers & Utilities AWARD BIOS Setup Glossary Online Manual AX4B-G2 / AX4B-G2N DOC. NO. : AX4BG2N-OL-E0205A AX4B- G2 / AX4B- G2N 1 AX4B- G2 / AX4B- G2N W h a t 's i n t h i s m a n u a l Online Manual AX4B-G2 / AX4B-G2N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 What's in this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 You Must Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] If any of these systems' status goes wrong, there will be an alarm through the chassis external speaker or buzzer of motherboard (if existed) to warn the user. Fan Fan Speed Detection Circuit AOpen H/W Monitoring Utility CPU CPU Temperature CPU Voltage Power System Voltage 52 AX4B- G2 / AX4B- G2N A O C o n f i g Ut i li ty Online Manual AOpen always dedicated to provide users a much friendlier computer environment. We now bring you a comprehensive system detective utility. AOconfig is a Windows based utility with user-friendly interface that allows users to obtain information of the operation system and hardware such as motherboard, CPU, memory, PCI devices and IDE devices. The powerful utility also displays the version of BIOS and firmware for your convenience of maintenance. Moreover, AOconfig allows users to save information in *. BMP or *. TXT format which users may collect the system information in detail and send them to AOpen directly for technical support or further diagnosis of system problem. 1. The system page shows the detail information of the motherboard, the operating system, the processor, and BIOS version. 2. The PCI device page shows the configurations of all PCI devices ins talled on your motherboard. 53 AX4B- G2 / AX4B- G2N Online Manual 3. This page presents the IDE devices information, such as the serial number, the manufacturer, the firmware version, and capacity. 4. From this page, users may obtain the technical support information of AOpen. Moreover, detailed information could be saved in . bmp or . txt format. NOTE: AOconfig can be used in Windows 98SE/ME, NT4. 0/2000, or even the latest Windows XP. Please be informed that AOconfig can only be operated in a system equipped with an AOpen motherboard. Meanwhile, all applications must be closed before starting AOconfig. 54 AX4B- G2 / AX4B- G2N Resetable Fuse Online Manual Traditional motherboard has fuse for Keybo a rd and USB port to prevent over-current or shortage. These fuses are soldered onboard that when it is broken (function as protecting the motherboard), user still cannot replace it and the motherboard is still malfunctioning. With expensive Resetable Fuse, the mothe rb oard can be resumed back to normal function after the fuse had done its protection job. Resetable Fuse 55 AX4B- G2 / AX4B- G2N 220 0 F L o w ES R Ca p a c it o r 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, AX4B-G2 / AX4B-G2N implements 2200F capacitors, which is much larger than normal capacitor (1000 and 1500f) and it provides better stability for CPU power. 56 AX4B- G2 / AX4B- G2N Online Manual The powe r 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 co re 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 exactly be the same motherboard. 57 AX4B- G2 / AX4B- G2N Layout (Frequency Isolation Wall) Online Manual For high frequency operation, especially overclocking, layout is the most important factor to make sure chipset and CPU working in stable condition. The layout of this motherboard implements AOpen's unique design called " Frequency Isolation Wall". Separating each critical portion of motherboard into regions where each region operates in a same or similar frequency range to avoid cross talk and frequency interference between each region's operations and condition. The trace length and route must be calculated carefully. For example, the clock trace must be equal length (not necessarily as short as possible) so that clock skew will be controlled within few a pico second (1/1012 Sec) Note: This diagram for example only, it may not be exactly the same as this motherboard. 58 AX4B- G2 / AX4B- G2N Enlarged Aluminum Heatsink Online Manual Cool down CPU and Chipset is important for system reliability. Enlarged aluminum heat sink provides better heat consumption especially when you are trying to over clocking the CPU. 59 AX4B- G2 / AX4B- G2N Vivid BIOS technology Online Manual Have you been fed up with the conservative and immutable POST screen? [. . . ] For example: Part No. Serial No. Part No. P/N: 9 1. 88110. 201 is part number, S/N: 91949378KN73 is serial number. 103 AX4B- G2 / AX4B- G2N Mo de l na me a n d B IO S v ers i on Online Manual M odel nam e and BIOS version can be found on upper left corner of first boot screen (POST screen). For example: AX 4B-G2 R1. 20 May. 01. 2002 AOpen Inc. Award Plug and Play BIOS Extension v1. 0A Co pyright © 1998, Award Software, Inc. AX4B-G2 / AX4B-G2N is model name of motherboard; R1. 20 is BIOS version. 104 AX4B- G2 / AX4B- G2N Online Manual Pr o d uc t R e g is t r at i o n Thank you for choosing AOpen product. AOpen encourages you to spend few minutes in completing the following product registration. [. . . ]