User manual EPOX EP-3XCA2

[. . . ] The numbering of the remaining pins follows in sequence. Pins 1 Cap Setting 1 Cap Style 2 A 3-pin jumper A cap over pin 1 and pin 2 shorts these pins Figure 2-1 3 Chapter 2 FAN2 JP12, JP13 JPX1 CN2, JP7, JP3/JP4, CN3, CN4 JP5, JP6 J2, CN14, JP1, CN6 FAN1, CN1, IR 4 Hardware Setup Jumper & Connector No. PW1 JP1 JP3/JP4 JP5 JP6 JP7 JP12/JP13 Function ATX Power Supply Connector Onboard Audio (Optional for C-Media) Audio Line_out or Speaker_out Boot BIOS Select (Optional for TwinBIOS) Clear CMOS Data Primary Audio CODEC Select (Optional) CPU Bus Frequency Over-ride Power Button Connector Power Indicator LED Connector Green Switch / Green LED Connector Page 12 15 15 15 16 16 16 13 13 14 14 14 14 14 17 17 17 17 18 18 18 19 19 19 19 CN1 System Reset Switch Connector Speaker Connector IDE Activity LED Connector Turbo LED Connector JPX1 CN2 CN3 CN4 CN6 CN14 USB Ports PS/2 Ports IR J2 FAN1/2 IDE RAID Controller (Optional) CD-ROM Audio_in Connector Auxiliary CD-ROM Audio-in Connector Audio Mono -in/out Connector (Optional) WOL(Wake On LAN) Connector USB 2/3 Connector USB 0/1ports PS/2 Mouse and Keyboard Ports Infrared Connector Fiber Optical Connector (Optional) CPU/ System Cooling Fan Connector 5 Chapter 2 2-4 Connector and Jumper Settings Connectors are used to link the system board with other parts of the system, including the power supply, the keyboard, and the various controllers on the front panel of the system case. 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 (PW1) 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. To support this function, a switching power supply with a minimum of 750mA 5VSB is required. The ATX power supply provides a single 20-pin connector interface which incorporates standard +/ -5V, +/-12V, optional 3. 3V and Soft-power signals. [. . . ] It is important to pay attention to the correct cables and pin orientation (i. e. , not to reverse the order of these two connectors. ) Over-ride Power Button Operation Pin 1 Power Indicator LED Definition +5V DC No Connection Ground 2 3 Software Power-Off Control This motherboard 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. 7 Chapter 2 C. Green Switch/Green LED Connector Some ATX cases provide a Green switch which is used to put the system in Suspend mode. In Suspend mode, the power supply to the system is reduced to a trickle, the CPU clock is stopped, and the CPU core is in it's minimum power state. The system is woken up whenever the keyboard or mouse is touched. The system resumes in different ways as defined by Power Management Setup screen in BIOS. System Reset Switch Connector This connector should be connected to the reset switch on the front panel of the system case. The reset switch allows you to restart the system without turning the power off. Pin 1 2 Definition System GND E. Speaker Connector Pin 1 2 3 4 Definition Speaker Signal No Connection No Connection +5V DC F. IDE Activity LED Connector The IDE activity LED lights up whenever the system reads/writes to the IDE devices. Turbo LED Connector This motherboard does not have a Turbo/De-turbo speed modes. So the turbo LED will always light. 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. 8 Hardware Setup Optional Onboard Audio (JP1) 1 1 Enable Disable This function allows you to enable and disable the on board audio. You must set the jumper's cap to pins 1-2 to enable or set pins 2-3 to disable this function. Audio Line_out or Speaker_out (JP3/JP4) JP3 1 JP4 Line_out JP3 JP4 1 Speaker_out (default) This jumper allows you to select between audio line-out or speaker out function. Set both JP3 and JP4 pins to 1-2 for line-out function or set both JP3 and JP4 pins to 2-3 for speaker out function. Optional Boot BIOS Select (JP5) 1 1 Boot BIOS select (default) BIOS 1 (Power on only)/ BIOS 2 (Power on + Reset button) This feature allows you to select a BIOS to boot up your system. Set the pin to 1-2 to enable Boot BIOS select in the BIOS Features Setup and then select either BIOS 1 or BIOS 2 for startup (see section 2-4). The feature also allows you to manually shift to another BIOS once the BIOS fail to boot. Set pin to 2-3 to boot from BIOS 1 and then press the power on button to boot up or press reset and power on button hold for 2-3 second and then release to boot from BIOS 2. 9 Chapter 2 Clear CMOS Data (JP6) 1 1 Normal (default) 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. Connect the system's power and then start the system. [. . . ] USB is a dynamically reconfigurable serial bus with an elementary data rate of 12Mbps. Based on off the shelf, low cost micro-controller technology, its modular layered software protocol supports sophisticated devices and application programs. 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. SPD (Serial Presence Detect) This is an EPROM that contains speed and design information about the memory module. [. . . ]