User manual AOPEN MX4SGL

[. . . ] Overview Troubleshooting & Technical Support Hardware Installation Drivers & Utilities AWARD BIOS Setup Glossary Online Manual DOC. NO. : MX4SGN-OL-E0305B MX4SG-N / MX4SG-L MX4SG-N / MX4SG-L 1 MX4SG-N / MX4SG-L What's in this manual Online Manual MX4SG-N / MX4SG-L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 What's in this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 You Must Notice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Before You Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] You may contact your AGP card vendor for further support. AGP LED Warning: It is strongly recommended not to install a 3. 3V AGP card, which is not supported by Intel Springdale-G. When you do so, the AGP LED on the motherboard will light up to warn you the possible damage. 53 MX4SG-N / MX4SG-L Battery-less and Long Life Design Online Manual This Motherboard implements a Flash ROM and a special circuit that provide you no batter power consumption of current CPU and CMOS Setup configurations. The RTC (real time clock) can also keep running as long as the power cord is plugged. If you lose your CMOS data by accident, you can just reload the CMOS configurations from Flash ROM and the system will recover as usual. ATX Stand-by Power Battery Auto Switch RTC (Real Time Clock) 00:00:00 Auto switching to ATX standby power as long as AC power line is plugged. This smart design increases battery life if you still plug battery on motherboard. Flash ROM CMOS Backup by EEPROM 54 MX4SG-N / MX4SG-L Resetable Fuse Online Manual Traditional motherboard uses fuses to prevent Keyboard and USB port from over-current or shortage. These fuses are soldered onboard 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 55 MX4SG-N / MX4SG-L 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, MX4SG-N / MX4SG-L implements 2200F capacitors, which is much larger than normal capacitor (1000 & 1500F) and it provides better stability for CPU power. 56 MX4SG-N / MX4SG-L 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. 57 MX4SG-N / MX4SG-L AOpen "Watch Dog ABS" Online Manual AOpen provides a special and useful feature on this motherboard for overclockers. When you power-on the system, the BIOS will check last system POST status. If it succeeded, the BIOS will enable "Watch Dog ABS" function immediately, and set the CPU FSB frequency according to user's settings stored in the BIOS. If system failed in BIOS POST, the "Watch Dog Timer" will reset the system to reboot in five seconds. Then, BIOS will detect the CPU's default frequency and POST again. With this special feature, you can easily overclock your system to get a higher system performance without removing the system housing and save the hassle from setting the jumper to clear CMOS data when system hangs. Enable/Disable Signal from BIOS BIOS Reset Signal AOpen Watch Dog ABS Countdown about 5 seconds if fails in POST Clock Generator CPU ID Signal CPU 58 MX4SG-N / MX4SG-L 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). Phoenix-Award BIOSTM 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 settings of MX4SG-N / MX4SG-L have been optimized by AOpen's R&D engineering team. But, the default setting of BIOS still can't fine-tune the chipset controlling entire system. Therefore, the rest of this chapter intends to guide you the process of configuring your system setup. [. . . ] You can find this bar code label on the outside packing, on ISA/CPU slot or on component side of PCB. For example: Part No. Serial No. Part No. P/N: 91. 88110. 201 is part number, S/N: 91949378KN73 is serial number. 103 MX4SG-N / MX4SG-L 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: MX4SG-N R1. 20 Mar. 01. 2003 AOpen Inc. Award Plug and Play BIOS Extension v1. 0A Copyright © 2003, Award Software, Inc. MX4SG-N is model name of motherboard; R1. 20 is BIOS version. 104 MX4SG-N / MX4SG-L Online Manual Product Registration Thank you for choosing AOpen product. [. . . ]