User manual EPOX EP-6XBA2

[. . . ] Not doing so may result in electrical shock! 2-1 Introduction to Jumpers Jumpers are used to select between various operating modes. A jumper consists of a row of gold colored pins that protrude from the surface of the motherboard. It is important not to confuse jumpers with connectors or headers. Putting jumper caps on anything that is not a jumper may result in damaging your motherboard. [. . . ] The power supply connector is the last connection to be made while installing a motherboard. Before connecting the power supply, please make sure it is not connected to the power source. ATX Power Supply Connector (CN7) The power cord leading from the system's power supply to the external power source must be the very last part connected when assembling a system. The ATX power supply provides a single 20-pin connector interface which incorporates standard +/-5V, +/-12V, optional 3. 3V and Soft-power signals. The Soft-power signal, a 5V trickle supply is continuously supplied when AC power is available. When the system is in the Soft-Off mode, this trickle supply maintains the system in it's minimum power state. Software Power-Off Control 2theMax 6XBA2 can be powered down using the Windows 95/98 Software Power-Off function. To power down your computer, click the START button on the Windows 95/98 task bar. Select "Shut Down The Computer" and the system turns off. The message "It is now safe to turn off your computer" will not be shown when using this function. Power-On By Modem While in Soft-off state, if an external modem ring-up signal occurs, the system wakes up and can be remotely accessed. You may enable this function in BIOS's Power Management Setup menu. 9 Chapter 2 Front Panel Connector Set (CN9) A through G A. Over-ride Power Button Connector The power button on the ATX chassis can be used as a normal power switch as well as a device to activate Advanced Power Management Suspend mode. This mode is used for saving electricity when the computer is not in use for long periods of time. The Soft-OFF by PWR-BTTN function in BIOS's Power Management Setup menu must be set to "Delay 4 Sec. " to activate this function. (See section 3-4) When the Soft-OFF by PWR-BTTN function is enabled, pushing the power button rapidly will switch the system to S p e ake r H e ad e r R ese t S w itch + 1 Tu rb o L E D + + P o w e r In d ica to r L E D G ree n S w itch G re en L E D + Suspend mode. Any occurrence of external activities such ID E A ctivity L E D O ver-rid e Po w er B utto n as pressing a key on the keyboard or moving the mouse will bring the system back to Full-On. Pushing the button while in Full-On mode for more than 4 seconds will switch the system completely off. See Over-ride Power Button Operation diagram. Power Indicator LED Connector The power indicator LED shows the system's power status. It is important to pay attention to the correct cables and pin orientation (i. e. , not to reverse the order of these two connectors. ) Pin 1 2 3 Definition +5V DC Not Connected Ground Over-ride Power Button Operation Blinking LED in Suspend Mode While in Suspend mode, the LED light on the front panel of your computer will flash. Suspend mode is entered by pressing the Override Power Button, pushing the Green button on your ATX case, or enabling the Power Management and Suspend Mode options in BIOS's Power Management menu. Set both JP2 and JP6 pins to 1-2 for line-out function or set both JP2 and JP6 pins to 2-3 for speaker out function. . External Clock Frequency (JP2A/JP2B) External Clock JP2A JP2B AUTO 66 MHz 100 MHz 133 MHz 1 1 1 1 1 1 1 1 This jumper allows the system bus frequency to be determined either by CPU or the user. If set both JP2A/JP2B pins to 1-2, the CPU determines the system bus frequency speed. Set both JP2A/JP2B pins to 2-3 for 66MHz FSB, set only JP2B pins to 2-3 for 100MHz FSB and leave both JP2A/ JP2B pins open for 133MHz FSB. 12 Hardware Setup Clear CMOS Data Jumper (JP3) 1 Normal (default) 1 Clear CMOS data To clear the contents of the CMOS, please follow the steps below. Disconnect the system power supply from the power source. Set the jumper cap at location 2~3 for 5 seconds, then set it back to the default position. [. . . ] Four USB peripherals or hub devices are able to be connected. USB3 U SB 4 JP 1 Hardware Setup 2-5 Main Memory Configuration The DRAM memory system consists of three banks and the memory size ranges from 16~768 MBytes. It does not matter which bank you want to install first. DIM M 1 DIM M 2 DIM M 3 1 128 Bank0 Bank1 2 Bank2 DRAM Specifications FSB SDRAM Type FSB 66 FSB+33 FSB-33 100 FSB FSB+33 FSB-33 133 FSB 7. 5ns or faster 10ns or faster 12ns or faster 10ns or faster 7. 5ns or faster 10ns or faster 768MB SDRAM Type 12ns or faster Max Memory DIMM type Module size: Parity: 3. 3V, unbuffered, registered, 64/72-bit SDRAM with SPD* Single/double-side 16/32/64/128/256/512 MBytes Either parity or non-parity The compatibility with 512MB and Registered DIMM is still under testing and cannot be guaranteed. This motherboard supports 3. 3v, unbuffered, 4-clock, SDRAM DIMM only. Buffered, 5V, or 2-clock SDRAM DIMMs should not be used. Due to loading anomalies, using DIMM with an 'n x 4' DRAM base on this motherboard is not recommended. For example, a DIMM that uses sixteen 16Mb x 4 devices should not be used. 17 Chapter 2 SPD (Serial Presence Detect) This is an EPROM that contains speed and design information about the memory module. [. . . ]