Intel Motherboard User Manual
Chapter 1: Introduction
This document provides an overview of the Intel motherboard, its specifications, and package contents.
1-1 Product Specifications
- Processor: Supports Intel Pentium® II/III processors up to 750 MHz. Features a Slot 1 CPU socket with universal retention mechanism. Supports 100/133 MHz system clock speeds. Includes high efficiency switching power modules with dual power delivery (VRM 8.4v Compliant).
- Chipset: Intel 820 (Camino) three chip AGPset.
- Direct Rambus DRAM Memory: Equipped with two 184-pin SRIMM sockets supporting up to 1GB Direct Rambus RIMMs. Supports up to 32 DRDRAM devices and provides single-bit ECC capability.
- Expansion Slots: Includes one AMR slot (v 1.0 compliant), five 32-bit PCI slots (Rev 2.2 compliant), one 16-bit ISA slot (Optional), and one Universal AGP slot for both 2X/4X AGP at 3.3v or 1.5v.
- Boot-Block Flash ROM: Features an Intel 4 Mega bit FWH (Firmware Hub). Includes Award System BIOS with support for PnP, APM, DMI & Multi-device booting (floppy, LS120, CD-ROM, HDD(IDE, SCSI), ZIP-ATAPI). BIOS Wonder technology includes Trend ChipAway Virus, Flash BIOS Protect, and Embedded Flash Utility.
- Embedded USB Controller: Provides two USB ports (UHCI v.1.0 compliant).
1-1 Product Specifications (Continued)
- Two Ultra DMA-66 PCI IDE controller: Offers two IDE ports supporting up to 4 ATAPI devices. Supports PIO Mode 4 up to 16.6MBps and Multi Mode 4 up to 66MBps with bus mastering. Includes Bus Mastering software drivers for common multi-task operating systems. Features a blue colored connector for IDE#1 and a white colored connector for IDE#2.
- Onboard LPC I/O: Utilizes the WB83627HF LPC I/O chip with SHM (System Health Monitor). Provides one Parallel (SPP/ECP/EPP) port and two Serial (16550A compliant) ports. Includes one floppy disk drive connector supporting up to 2.88MB, Japanese 3-Mode, and 1Mbps transfer rates. Supports HPSIR and ASKIR functions shared with the 2nd serial port. Also includes a Game/MIDI port for soft-audio.
- Double Stack Back-Panel I/O Connectors: Features PC'99 Compliant color connectors, including a PS/2 Mini-DIN keyboard and mouse port, two USB ports, two 9-pin D-SUB male Serial ports, one 25-pin D-SUB female Printer port, one 15-pin D-SUB female Game/MIDI port, and Audio Line-in/out and Mic-in jacks.
- Onboard PCI Audio Subsystem: Equipped with a Creative CT5880 audio chip. Features an Advanced 64-voice Wavetable Synthesizer with programmable independent sample rate from 4KHz to 48KHz for recording and playback. Supports full-duplex operation for simultaneous recording and playback. It includes Microsoft's DLS (Downloadable sample) level-1 technology and supports HRTF 3D positional audio with Microsoft's DirectSound, DirectSound 3D, DirectMusic, Aureal A3D, and Creative EAX (Environment Audio Extensions) APIs. The subsystem supports 4-channel speaker audio for home theater environments and provides S/PDIF-out for compressed AC3 data to external Dolby Digital Decoders. It is PCI v2.1 compliant and fully Legacy DOS software compatible.
1-1 Product Specifications (Continued)
- Board Dimensions: ATX form factor, measuring 305mm x 244mm, on 4 Layers.
- Product Features: Includes innovative SeePU technology for jumperless CPU installation, Embedded System Monitor Hardware, Poly-fuse over-current protection for USB and keyboard circuitry, and ACPI (v1.0 compliant) STR (Suspend To RAM) ready. Features Complete Data Security with chassis intrusion detection against unauthorized access using Trend ChipAway Virus and PC-cillin98 for virus-free booting.
- Advanced Management Features: Supports various power-on events including mouse movement or clicks, keyboard password, WOL (Wake On LAN) network card, Modem ring, RTC-Alarm, and USBs. Includes software power-off control for Win98, override power button functionality, and enhanced power failure recovery with three selectable states for Vsb (Always On, Always Off, and Last state). System lockup recovery is handled by SMI# or system Reset. Features Blinking Power-LED in suspend and FAN power OFF control in suspend.
- Switching Power Supply Requirement: The following table details the power supply requirements:
Output Voltage Max. Regulation Min. Current Requirement (Amps) +12V +/- 5% 5.5 +5V +/- 5% 15 +3.3V +/- 5% 15 -5V +/- 10% 0.5 -12V +/- 10% 0.5 +5VSB +/- 5% 0.75 Note: 3.3V at 15Amps is necessary to guarantee full loading operation, as some AGP cards and memory modules have high current consumption.
1-2 Package Contents
This product comes with the following components:
- One mainboard
- Onboard Slot 1 foldable retention mechanism and four screws
- One 40-pin Ultra DMA-66 IDE connector ribbon cable (Refer to Figure 1-1 for visual). The cable features color-coded connections for UDMA/66: Blue to the mainboard, Ground in blue, Gray for Master, and Black for Slave.
- One 34-pin floppy disk drive ribbon cable (Refer to Figure 1-2a or Figure 1-2b for visual).
- One User's Manual
- One CD-ROM containing: Acrobat Reader, Award Flash EPROM Utility, Award DMI Utility for DOS, Intel Security Driver, System Health Monitoring Software, Sound Driver and Utility for Win95/98/NT, Trend PC-cillin 98 Anti-virus Utility (in eight different languages), and an Optional AIRBAG software group including AntiVirus programs and other helpful utilities.
Figure 1-1: UDMA66 IDE cable (visual of a flat, multi-colored ribbon cable).
Figure 1-2a: Standard Floppy cable (visual of a standard 34-pin floppy cable).
Figure 1-2b: Optional 5.25 in. floppy cable (visual of a 34-pin floppy cable, possibly for 5.25" drives).
1-3 Mainboard Layout
The mainboard layout is illustrated with labels pointing to various connectors and jumpers. Key components include:
- JP11/JP12: Audio Line out and Speaker out
- JP10: On board Audio Enable/Disable
- J2: CD_ROM Audio IN
- J1: Audio Mono-in/out
- J3: AUX_IN
- JP8: IR-Infrared
- CN4: WOL-Wake on LAN
- JP4: CMOS Clear
- JP9: Chassis intrusion
- FAN3: Chassis FAN Connector
- CN6: Front Panel Connector
- CN7: ATX Power Supply Connector
- JP1: External Clock Frequency Jumper
1-4 Connector and Jumper Reference Chart
The following table lists connectors and jumpers with their functions and reference pages:
| Jumper & Connector No. | Function | Ref. Page |
| J1 | Audio Mono-in/out Connector | 17 |
| J2 | CD-ROM Audio-in Connector | 17 |
| J3 | Auxiliary CD-ROM Audio-in Connector | 17 |
| CN4 | WOL(Wake-on-LAN) Connector | 19 |
| CN6 | Green Switch Connector | 13 |
| Green LED Connector | 13 | |
| System Reset Switch Connector | 13 | |
| Turbo LED Connector | 13 | |
| Keyboard Lock & Power Indicator LED Connector | 12 | |
| Speaker Connector | 13 | |
| IDE Activity LED Connector | 13 | |
| Over-ride Power Button Connector | 12 | |
| CN7 | ATX Power Supply Connector | 11 |
| JP 1 | External Clock Frequency Jumper | 14 |
| JP 4 | Clear CMOS Data Jumper | 14 |
| JP 7 | PS/2 Keyboard/Mouse Power-on Function Jumper | 14 |
| JP 8 | Infrared Connector | 15 |
| JP 9 | Chassis Intrusion Monitoring Connector | 15 |
| JP10 | On Board Audio Jumper | 15 |
| JP 11/JP12 | Audio Line out and Speaker out Jumper | 16 |
| JP13 | USB Device Power On Function Jumper | 16 |
| FAN 1/2/3 | System/CPU/Chassis Cooling fAN Connector | 16 |
| PS/2 Ports | PS/2 Mouse and Keyboard Ports | 18 |
| USB Ports | USB (Universal Serial Bus) Ports | 18 |
Memo
This section is reserved for notes.
Chapter 2: Hardware Setup
This chapter guides users through the hardware setup process for the mainboard, including installing components and configuring jumpers.
⚠ Safety Warning: Ensure the power cable is disconnected from the power source before performing any work on the mainboard, such as installing a CPU, memory module, or changing jumper settings. Failure to do so may result in electrical shock.
2-1 Introduction to Jumpers
Jumpers are used to select various operating modes. They consist of gold-colored pins on the mainboard. It is important not to confuse jumpers with connectors or headers.
⚠ Caution: Placing jumper caps on anything that is not a jumper may damage your mainboard. Refer to Section 1-3, Mainboard Layout, for jumper locations.
A jumper cap covers pins to short them. If the cap is removed, the jumper is left "open." Pin 1 is indicated in diagrams, with remaining pins numbered sequentially.
Figure 2-1: Illustration of jumper components. Shows 'Pins', 'Cap1', 'Setting', 'Cap2'. A 3-pin jumper example shows a cap covering pins 1 and 2 to short them.
2-2 Installing an Intel Processor in Slot 1
- Insert the Intel Pentium II/III/Coppermine/Celeron processor into the retention mechanism. Press evenly and gently until the snaps on the upper side of the processor are inserted into the holes at the top of the retention mechanism.
- When removing the processor, ensure the snaps are clicked into a completely vertical position to stabilize the board. Pull the processor evenly and gently out of the retention mechanism.
- Note that Slot 1 has a divider, similar to PCI and ISA slots, which prevents backwards insertion of the CPU.
⚠ Important: Installing a heat sink with a cooling fan is essential for proper heat dissipation from the CPU. Failure to install these items may lead to overheating and potential CPU burnout.
2-3 Setting Your CPU's Parameters (SeePU Technology)
SeePU is a user-friendly technology that allows users to set up mainboard CPU parameters via an easy-to-use BIOS setup procedure, reducing the need for numerous jumper settings found on conventional mainboards.
- After installing all hardware, turn on the system. Press the Delete key when the BIOS identification screen appears to enter the CMOS Setup Utility.
- Navigate to the SeePU Setup menu and press Enter. Locate the CPU Host/PCI Clock option. (Refer to the bottom of the BIOS screen for cursor operation commands, as shown in Figure 2-2).
- Use the CPU Host/PCI Clock option to select your CPU parameters. Set the clock ratio (external clock multiplier factor) according to your processor's specifications (See Figure 2-3).
⚠ Note: The external clock frequency (JP1) must be selected according to your processor. Incorrect settings may prevent the system from booting (See Section 2-4).
⚠ Note: Voltage settings are automatically handled by SeePU.
- Press Esc to return to the CMOS Setup Utility. Press F10 to Save and Exit Setup, then confirm with 'Y'. The system will reboot, displaying the correct CPU type during startup.
Figure 2-2: CPU Speed Table showing different Intel Pentium II/III & Celeron Processors and Intel Pentium III models with their corresponding External Clock, Frequency Ratio, and Internal Clock speeds.
Figure 2-3: Screenshot of the CMOS Setup Utility - Award Software SeePU Setup screen, displaying options like Auto Detect PCI Clock, Spread Spectrum, HOST CPU/PCI Clock, and CPU Clock Ratio, along with navigation keys.
Overclocking
Operating a CPU at a frequency higher than its specification is called overclocking. This may or may not function depending on CPU quality and the extent of the frequency increase. The mainboard manufacturer strongly discourages overclocking due to risks of data loss, CPU burnout, and system failure.
Many Intel processors are frequency locked and cannot be overclocked. Overclocking can cause processors to hang, resulting in a blank screen and failure to boot.
To resolve a processor hang:
- Turn off the computer and press the Home key on your keyboard.
- Turn on your computer, wait for five seconds, then release the Home key.
- Enter BIOS and reconfigure your CPU parameters as described in this section.
2-4 Connector and Jumper Settings
Connectors link the system board to other system components like the power supply, keyboard, and front panel controllers.
⚠ Important: The power supply connector (CN7) is the last connection to be made when installing a mainboard. Ensure it is not connected to the power source before proceeding.
ATX Power Supply Connector (CN7)
The power cord from the system's power supply to the external power source should be the very last part connected during system assembly.
⚠ Requirement: To support certain functions, a switching power supply with a minimum of 750mA 5VSB is required.
The ATX power supply provides a single 20-pin connector interface supporting standard +/-5V, +/-12V, optional 3.3V, and Soft-power signals. The Soft-power signal provides a 5V trickle supply when AC power is available, maintaining the system in a minimum power state when in Soft-Off mode.
Power-On By Modem
In Soft-off state, an external modem ring-up signal can wake the system, allowing remote access. This function can be enabled in the BIOS's Power Management Setup menu.
Poly-fuse Over Current Protection
The poly-fuse protects the system from dangerous voltages that might be exposed via keyboard or USB connectors. In case of exposure, the poly-fuse disconnects the circuit like a normal fuse. After a period, it returns to its normal state, allowing keyboard or USB functions to resume. Unlike conventional fuses, poly-fuses do not require replacement.
Front Panel Connector Set (CN6) A through F
- A. Over-ride Power Button Connector: The ATX chassis power button can function as a normal power switch or activate Advanced Power Management Suspend mode for power saving during long periods of inactivity. The Soft-OFF by PWR-BTTN function in BIOS's Power Management Setup menu must be set to "Delay 4 Sec." to enable this. A rapid push of the power button switches the system to Suspend mode. External activities (key press, mouse movement) wake the system to Full-On. Pushing the button for more than 4 seconds in Full-On mode switches the system completely off. (Refer to Over-ride Power Button Operation diagram for visual).
- B. Keyboard Lock & Power Indicator LED Connector: This connector allows the system case lock to enable or disable the keyboard, providing limited security. The power indicator LED shows the system's power status. Ensure correct cable and pin orientation.
Pinout for Keyboard Lock & Power Indicator LED Connector:
| Pin | Definition | |
| 1 | Power Good LED | +5V DC |
| 2 | No Connect | |
| 3 | Ground | |
| 4 | Keyboard Lock | Keylock |
| 5 | Ground |
- Software Power-Off Control: The mainboard can be powered down using the Windows 95 Software Power-Off function. Access it via the START button, select "Shut Down The Computer." The message "It is now safe to turn off your computer" will not be displayed when using this function.
Front Panel Connector Set (CN6) Continued
- C. Green Switch/Green LED Connector: Some ATX cases include a Green switch to put the system into Suspend mode. In Suspend mode, power supply is reduced, the CPU clock is stopped, and the CPU core is in a minimum power state. The system wakes up when the keyboard or mouse is touched, resuming based on Power Management Setup in BIOS.
- D. System Reset Switch Connector: Connects to the front panel reset switch, allowing system restart without turning off power.
- E. Speaker Connector: Connects to the internal speaker.
- F. IDE Activity LED Connector: Lights up when the system reads/writes to IDE devices.
- G. Turbo LED Connector: Lights up when the system is in suspend mode.
Blinking LED in Suspend Mode: In Suspend mode, the front panel LED will flash. Suspend mode is entered via the Override Power Button, the Green button on the ATX case, or through BIOS Power Management settings (See section 3-4).
Connector and Jumper Settings
- External Clock Frequency (JP1): This jumper determines the external clock frequency, either set by the CPU (pins 1-2) or fixed at 133MHz (pins 2-3).
- Clear CMOS Data Jumper (JP4): To clear CMOS contents, disconnect power, set jumper to pins 2-3 for 5 seconds, then return to default. Reboot, enter BIOS, choose Load Setup Defaults, and configure system settings.
- PS/2 Keyboard/Mouse Power-on Function (JP7): Allows system power-on via PS/2 keyboard (hot key/password) or mouse click. Enable the desired device in BIOS's Integrated Peripherals screen and set this jumper's cap to pins 2-3.
Connector and Jumper Settings Continued
- Infrared Connector (JP8): Supports IR functions if IR Address Select is enabled in BIOS's Integrated Peripherals menu.
- Chassis Intrusion Monitoring Connector (JP9): Supports chassis intrusion detection via a mechanical or photo sensor switch connected to this 1x3-pin header. The mechanical switch is set to open for normal computer operation.
- Onboard Audio Jumper (JP10): Enables or disables the onboard audio. Set jumper to pins 1-2 to enable, or pins 2-3 to disable.
Connector and Jumper Settings Continued
- Audio Line out and Speaker out Jumper (JP11/JP12): Selects between audio line-out or speaker out function. Set both JP11 and JP12 pins to 1-2 for line-out, or pins 2-3 for speaker out.
- USB Device Power On Jumper (JP13): Allows system power-on via a USB keyboard (hot key/password) or USB mouse click. Select the device in BIOS's Power on Function option and set this jumper's cap to pins 2-3.
- System/CPU/Chassis Cooling Fan Connectors (FAN1/FAN2/FAN3): These connectors allow fans to draw power from the mainboard. The board's management hardware can detect CPU and system fan speed (RPM). Connectors support 3-pin cooling fans (minimum 3500 RPM). Standard wiring: Red (+12V), Black (Ground), Yellow (rotation signal). FAN3 is an independent power line, not controlled by system health monitor or power management.
Connector and Jumper Settings Continued
- Audio Mono -in/out (J1): Connect the CD-ROM to the mainboard using the enclosed mono audio cable to enable mono audio in/out function.
- CD-ROM Audio-in (J2): Connect the CD-ROM to the mainboard using the enclosed audio cable to enable CD-ROM audio function.
- Auxiliary CD-ROM Audio-in (J3): Connect the CD-ROM to the mainboard using the enclosed auxiliary audio cable to enable CD-ROM audio function.
Connector and Jumper Settings Continued
- WOL (Wake-on-LAN) Connector (CN4): Enable the Wake Up On LAN function in BIOS's Power Management Menu. Magic Packet technology provides WOL capability to the LAN controller, allowing the PC to wake up upon receiving a Magic Packet frame. This header connects an add-in NIC for WOL capability.
- PS/2 Mouse and Keyboard Ports: If a PS/2 mouse is used, BIOS automatically detects and assigns IRQ12.
Pinout for PS/2 Mouse and Keyboard Ports:
| Pin | Definition |
| 1 | Data |
| 2 | No Connect |
| 3 | Ground |
| 4 | +5V (fused) |
| 5 | Clock |
| 6 | No Connect |
- USB(Universal Serial Bus) Ports: Enable USB keyboard support in BIOS's Integrated Peripherals menu. USB is an open standard providing a simple way to connect up to 125 devices. It offers a data rate of 12Mbps and supports sophisticated devices and applications.
2-5 Direct Rambus Memory Subsystem
The Direct Rambus Memory Subsystem features two banks, supporting memory sizes from 64 to 512MBytes and up to 32 DRDRAM devices. It is necessary to fill all unused banks with CRIMMs for the subsystem to function correctly.
Figure 2-4: Visual of a Direct RDRAM Module (CRIMM).
Figure 2-5: Visual of a CRIMM Module.
⚠ Compatibility Note: Compatibility with 512MB and higher Direct RDRAM is still under testing and cannot be guaranteed.
⚠ Requirement: All unused banks must be filled with CRIMM for the Direct Rambus Memory Subsystem to function.
Memo
This section is reserved for notes.
Chapter 3: Award BIOS Setup Program
The Award BIOS ROM includes a setup program for modifying basic system configuration, with settings stored in CMOS RAM for retention even when power is off.
To enter the Award BIOS setup program, press the Delete key during system startup or restart. The primary screen (Figure 3-1) lists available menus and functions. Select items and press Enter to make changes. Operating commands are displayed at the bottom of BIOS screens. Highlighted fields show on-line help information on the right side.
Figure 3-1: Screenshot of the CMOS Setup Utility - Award Software, showing the main menu with options like Standard CMOS Features, Advanced BIOS Features, Integrated Peripherals, Power Management Setup, etc., and navigation keys (Esc, F10).
