2. FEATURES Specifications
Enhanced ACPI & Anti-Boot Virus Protection: Programmable BIOS (Flash EEPROM), offering enhanced ACPI for Windows 98/2000/Millenium compatibility, built-in firmware-based virus protection, and autodetection of most devices for virtually automatic setup. Smart BIOS: 2Mbit flash ROM gives a new easy-to-use interface which provides more control and protection over the motherboard. Provides Vcore and CPU/ SDRAM frequency adjustments, boot block write protection, and HD/SCSI/MO/ ZIP/CD/Floppy boot selection. Hardware random number generator supports new security software for data protection and secured Internet transactions. Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI master busses to the memory and processor.
2.1.2 SpecificationsOptional Components
The following onboard components are optional at the time of purchase: Smart Networking: Features the SiS630E 10/100Mb Fast Ethernet Controller, which supports Wired for Management, remote wake-up, and OnNow initiative to reduce Total Cost of Ownership (TCO). PCI Audio: Smart Audio: Provides C-Media Electronics Inc.s CMI-8738 PCI 3D Extension Positional Audio Chip. With this chip onboard, no external CODEC is needed. CMI-8738 supports legacy audio (SB16), FM emulator/DLS wavetable music synthesis, and HRTF 3D positional audio functions, and PCtel HSP56 (1789) interface.Compatible with A3D and DirectSound 3D, CMI8738 thus meets PC98 requirements, and supports professional digital audio interface and 4-channel speaker.
2. FEATURES Optional Components

2.1.3 Performance

UltraPerformance: Onboard IDE Bus Master controller with two connectors that support four IDE devices in two channels. Supports UltraDMA/66, UltraDMA/33 (IDE DMA Mode 2), PIO Modes 3 & 4, and supports Enhanced IDE devices, such as DVD-ROM, CD-ROM, CD-R/RW, LS-120, and Tape Backup drives. Dual Speeds: CPU frequency can operate at either 133MHz or 100MHz. High-Speed Data Transfer Interface: IDE transfers using UltraDMA/33 Bus Master IDE can handle rates up to 33MB/s. This motherboard with its chipset and support for UltraDMA/66 doubles the UltraDMA/33 burst transfer rate to 66.6MB/s. UltraDMA/66 is backward compatible with both DMA/33 and DMA and with existing DMA devices and systems so there is no need to upgrade current EIDE/IDE drives and host systems. (UltraDMA/66 requires a 40-pin 80-conductor cable to be enabled and/or for UltraDMA Mode 4.) Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI master buses to memory and processor. SDRAM Optimized Performance: This motherboard supports PC133-compliant Synchronous Dynamic Random Access Memory (SDRAM), which increases the data transfer rate to 1066MB/s max. ACPI Ready: ACPI (Advanced Configuration and Power Interface) is also implemented on all ASUS smart series motherboards. ACPI provides more Energy Saving Features for future operating systems (OS) supporting OS Direct Power Management (OSPM) functionality. With these features implemented in the OS, PCs can be ready around the clock, yet satisfy all the energy saving standards. To fully utilize the benefits of ACPI, an ACPI-supported OS, such as Windows 98/2000/Millenium, must be used. New Compliancy: Both the BIOS and hardware levels of the motherboard meet the stringent requirements for PC 99 certification. The new PC 99 requirements for systems and components are based on the following high-level goals: support for Plug and Play compatibility and power management for configuring and managing all system components, and 32-bit device drivers and installation procedures for Windows 95/NT and later. Color-coded connectors and descriptive icons make identification easy as required by PC 99.

2. FEATURES Performance

2.1.4 Intelligence
Fan Status Monitoring and Alarm: To prevent system overheat and system damage, the CPU, power supply, and system fans can be monitored for RPM and failure. All the fans are set for its normal RPM range and alarm thresholds. Temperature Monitoring and Alert: To prevent system overheat and system damage, this motherboard supports processor thermal sensing and auto-protection. Voltage Monitoring and Alert: System voltage levels are monitored to ensure stable current to critical motherboard components. Voltage specifications are more critical for future processors, so monitoring is necessary to ensure proper system configuration and management. System Resources Alert: Todays operating systems, such as Windows 98/ Millenium, Windows NT/2000, and OS/2, require much more memory and hard drive space to present enormous user interfaces and run large applications. The onboard hardware ASUS ASIC in conjunction with either the bundled ASUS PC Probe or Intel LDCM will warn the user before the system resources are used up to prevent possible application crashes. Suggestions will give the user information on managing their limited resources more efficiently. Dual Function Power Button: Through BIOS, the power button can be defined as the Stand by (a.k.a. Suspend or Sleep) button or as the Soft-Off (see ATX Power / Soft-Off Switch Lead in 3.8 Connectors for more information) button. Regardless of the setting, pushing the power button for more than 4 seconds will enter the Soft-Off mode. Remote Ring On (requires modem): This allows a computer to be turned on remotely through an internal or external modem. With this benefit on-hand, users can access any information from their computers from anywhere in the world. Message LED (requires ACPI OS support): Message LEDs now act as information providers. Through the way a particular LED illuminates, the user can determine if a message has been received from a fax/modem. A simple glimpse provides useful information to the user. This function requires ACPI OS and driver support. Peripheral Power Up: Keyboard power up can be enabled or disabled through BIOS setup to allow the computer to be powered ON using your keyboard.

2. FEATURES Intelligence

2.2 CUSI-FX Motherboard Components
See opposite page for locations.
Location Processor Support Socket 370 for Pentium III/Celeron Processors.. 2 Chipsets SiS 630E 3C Integration Single Chip.. 3 ITE 8705 Super I/O Chipset... 13 2MbitFlash BIOS.. 12
2. FEATURES MB Components
Main Memory Maximum 1GB support 2 DIMM Sockets... 4 PC100/133 SDRAM and VCM SDRAM support Expansion Slots 2 PCI Slots... PCI/AMR Share Slot... 11 System I/O 2 IDE Connectors (UltraDMA/66 support).. Floppy Disk Drive Connector.. USB Headers (supports 3 USB ports).. Serial COM2 Header... USB Port Connectors.. (Bottom) Parallel Port Connector.. (Top) VGA Monitor Output Connector... Serial COM1 Port Connectors.. (Bottom) PS/2 Mouse Connector... (Top) PS/2 Keyboard Connector.. (Bottom) 21 Audio Cmedia 8738 PCI Audio Chipset (optional).. Game/MIDI Connector (on audio model only). (Top) Line Out Connector (on audio model only). (Bottom) Line In Connector (on audio model only). (Bottom) Microphone Connector (on audio model only). (Bottom) 16 Network Features SiS630E Ethernet Controller 1 LAN (RJ45) Connector (optional).. (Top) 20 Wake-On-LAN Connector... 9 Wake-On-Ring Connector... 1 Power ATX Power Supply Connector.. 5 Form Factor FlexATX

Expansion Slots

1) 2) 3) 4) 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14) 15) 16) 17) 18) 19) 20) 21) 22) 23) 24) 25) 26) 27) 28) DIMM1, DIMM2 Socket 370 PCI1, PCI2 AMR PS2KBMS PS2KBMS RJ-45 USB PARALLEL COM1/COM2 VGA1 GAME_AUDIO GAME_AUDIO PRIMARY/SECONDARY IDE FLOPPY PLED PWR_, CPU_, CH_FAN WOR WOL_CON USB1, USB2 CD1, AUX, MODEM AFPANEL AAPANEL SPEAKER (PANEL) KLOCK (PANEL) PWRLED (PANEL) MSG.LED (PANEL) SMI (PANEL) PWRSW (PANEL) RESET (PANEL) ATXPWR PWRTMP

Connectors

3. H/W SETUP Layout Contents
3.3 Hardware Setup Procedure
Before using your computer, you must complete the following steps: Check Motherboard Settings Install Memory Modules Install the Central Processing Unit (CPU) Install Expansion Cards Connect Ribbon Cables, Panel Wires, and Power Supply

3.4 Motherboard Settings

This section explains in detail how to change your motherboards function settings through the use of switches and/or jumpers. WARNING! Computer motherboards and expansion cards contain very delicate Integrated Circuit (IC) chips. To protect them against damage from static electricity, you should follow some precautions whenever you work on your computer.
1. Unplug your computer when working on the inside. 2. Use a grounded wrist strap before handling computer components. If you do not have one, touch both of your hands to a safely grounded object or to a metal object, such as the power supply case. 3. Hold components by the edges and try not to touch the IC chips, leads or connectors, or other components. 4. Place components on a grounded antistatic pad or on the bag that came with the component whenever the components are separated from the system. 5. Ensure that the ATX power supply is switched off before you plug in or remove the ATX power connector on the motherboard.

Jumperless Mode 1 2

JP3 JP1 JP2 JP0
CUSI-FX JumperFree Mode Setting
3. H/W SETUP Motherboard Settings
1) JumperFree Mode (JEN) This jumper allows you to enable or disable the JumperFree mode. The JumperFree mode allows processor settings to be made through the BIOS setup (see 4.4 Advanced Menu) IMPORTANT: In JumperFree mode, all DIP switches must be set to [1-2].

Jumper Mode 1 2

2) USB Device Wake Up (USBPWR0, USBPWR1) These jumpers allow you to enable or disable the USB device power up function for USB devices connected to your system.This feature requires an ATX power supply that can supply at least 2A on the +5VSB lead. The default is set to Disable because not all computers have the appropriate ATX power supply. Your computer will not power ON if you set these to Enable and do not have the appropriate ATX power supply. NOTES: 1. These two jumpers must be set in unison; that is, either both must be set to Disable or both to Enable. 2. These settings must also be set in conjunction with Wake On USB Device in 4.5.1 Power Up Control. Setting USBPWR0/USBPWR1 Enable [1-2] Disable [2-3] (default)

Enable Disable (Default)

USBPWR0

Enable

CUSI-FX USB Device Wake Up

Disable (Default)

3) CPU External Frequency Setting (JP3, JP1, JP2, JP0) This option tells the clock generator what frequency to send to the CPU, SDRAM, and the chipset. This allows the selection of the CPUs External frequency. The CPU External Frequency multiplied by the Frequency Multiple equals the CPUs Internal frequency (the advertised CPU speed).
JP3 JP1 JP2 JP0 JP3 JP1 JP2 JP0 JP3 JP1 JP2 JP0
1 CPU 66.6MHz SDRAM 100.0MHz PCI 33.3MHz
100.0MHz 100.0MHz 33.3MHz
150.0MHz 100.0MHz 37.5MHz
1 CPU 133.3MHz SDRAM 100.0MHz PCI 33.3MHz
100.0MHz 133.3MHz 33.3MHz
100.0MHz 150.0MHz 37.5MHz
CUSI-FX CPU External Frequency Selection
1 CPU 70.0MHz SDRAM 105.0MHz PCI 35.0MHz

95.0MHz 95.0MHz 31.7MHz

95.0MHz 126.7MHz 31.7MHz
1 CPU 112.0MHz SDRAM 112.0MHz PCI 37.3MHz

97.0MHz 129.3MHz 32.2MHz

1 CPU 133.3MHz SDRAM 133.3MHz PCI 33.3MHz

66.8MHz 66.8MHz 33.4MHz

97.0MHz 97.0MHz 32.3MHz

96.2MHz 96.2MHz 32.1MHz

Manual CPU Settings (NOTE: JumperFree mode must be disabled.) Set the jumpers according to the internal speed of your processor as follows: CPU (MHz) 96 SDRAM (MHz) 96 Frequency Selection Switches JP3 JP1 JP2 JP0 [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [2-3] [2-3] [2-3] [2-3] [2-3] [2-3] [2-3] [2-3] [1-2] [1-2] [2-3] [2-3] [1-2] [2-3] [2-3] [1-2] [1-2] [2-3] [2-3] [1-2] [1-2] [2-3] [2-3] [1-2] [1-2] [1-2] [1-2] [2-3] [2-3] [2-3] [1-2] [1-2] [1-2] [1-2] [2-3] [2-3] [2-3] [2-3] [1-2] [2-3] [1-2] [2-3] [2-3] [1-2] [2-3] [1-2] [2-3] [1-2] [2-3] [1-2] [2-3] [1-2] [2-3]
For updated processor settings, visit ASUSs web site (see ASUS CONTACT INFORMATION).
WARNING! Premature wearing of the processor may result when overclocking. Be sure that the DIMM you use can handle the specified SDRAM MHz or else bootup will not be possible.

3.5 System Memory (DIMM)

NOTE: No hardware or BIOS setup is required after adding or removing memory. This motherboard uses only Dual Inline Memory Modules (DIMMs). Sockets are available for 3.3Volt (power level) unbuffered Synchronous Dynamic Random Access Memory (SDRAM) of 16, 32, 64, 128MB, 256 or 512MB. to form a memory size between 16MB and 1.5GB. One side (with memory chips) of the DIMM takes up one row on the motherboard. This motherboard also supports NECs Virtual Channel (VC) SDRAMs. To use the chipsets Error Checking and Correction (ECC) feature, you must use a DIMM with 9 chips per side (standard 8 chips/side + 1 ECC chip). Memory speed setup is recommended through Configure SDRAM Timing by SPD (see 4.4.2 Advanced Chipset Setup). Install memory in any combination as follows: IMPORTANT For optimum signal integrity, inserting the DIMMs in the following order is recommended: DIMM1, DIMM2 SDRAMs used must be compatible with the current PC133/PC100 SDRAM specification. DO NOT mix SDRAMs with VC SDRAMs.

Location DIMM1 (Rows 0&1) DIMM2 (Rows 2&3) 168-pin DIMM SDRAM 16, 32, 64, 128, 256, 512MB SDRAM 16, 32, 64, 128, 256, 512MB Total System Memory (Max 1GB) x1 x1 = Total Memory
3. H/W SETUP System Memory

3.5.1 General DIMM Notes

This motherboard supports SPD (Serial Presence Detect) DIMMs. This is the memory of choice for best performance vs. stability. This motherboard does NOT support registered memory. SDRAM chips are generally thinner with higher pin density than EDO (Extended Data Output) chips. BIOS shows SDRAM memory on bootup screen. Single-sided DIMMs come in 16, 32, 64,128, 256MB; double-sided come in 32, 64, 128, 256, 512MB.
3.5.2 DIMM Memory Installation
Insert the module(s) as shown. Because the number of pins are different on either side of the breaks, the module will only fit in the orientation shown. DIMM modules are longer and have different pin contact on each side and therefore have a higher pin density. SIMM modules have the same pin contact on both sides.

88 Pins

60 Pins

20 Pins

CUSI-FX 168-Pin DIMM Sockets
The DIMMs must be 3.3V Unbuffered for this motherboard. To determine the DIMM type, check the notches on the DIMMs (see figure below).
168-Pin DIMM Notch Key Definitions (3.3V)
DRAM Key Position Unbuffered RFU Buffered
Voltage Key Position 5.0V 3.3V Reserved
The notches on the DIMM module will shift between left, center, or right to identify the type and also to prevent the wrong type from being inserted into the DIMM slot on the motherboard. You must ask your retailer the correct DIMM type before purchasing. This motherboard supports four clock signals.
3.6 Central Processing Unit (CPU)
The motherboard provides a ZIF Socket 370. The CPU that came with the motherboard should have a fan attached to it to prevent overheating. If this is not the case, then purchase a fan before you turn on your system. WARNING! Be sure that there is sufficient air circulation across the processors heatsink by regularly checking that your CPU fan is working. Without sufficient circulation, the processor could overheat and damage both the processor and the motherboard. You may install an auxiliary fan, if necessary. To install a CPU, first turn off your system and remove its cover. Locate the ZIF socket and open it by first pulling the lever sideways away from the socket then upwards to a 90-degree angle. Insert the CPU with the correct orientation as shown. The notched corner should point towards the end of the lever. Because the CPU has a corner pin for two of the four corners, the CPU will only fit in the orientation as shown. The picture is for reference only; you should have a CPU fan that covers the face of the CPU. With the added weight of the CPU fan, no force is required to insert the CPU. Once completely inserted, close the sockets lever while holding down the CPU. After the CPU is , install an Intel recommended fan heatsink. Locate the CPU fan connector (see 3.1 Motherboard Layout or 3.8 Connectors) and connect the CPU fan cable to it. NOTE: Do not forget to set the correct Bus Frequency and Multiple (frequency multiple setting is available only on unlocked processors) for your Socket 370 processor or else boot-up may not be possible. Socket 370 processors provide internal thermal sensing so that a socket mounted thermal resistor is not needed. CAUTION! Be careful not to scrape the motherboard when mounting a clampstyle processor fan or else damage may occur to the motherboard.

Socket 370 CPU (Top) Socket 370 CPU (Bottom)

3. H/W SETUP CPU

Celeron

CUSI-FX Socket 370

Gold Arrow

Pentium III

3.7 Expansion Cards
WARNING! Unplug your power supply when adding or removing expansion cards or other system components. Failure to do so may cause severe damage to both your motherboard and expansion cards.
3.7.1 Expansion Card Installation Procedure
1. Read the documentation for your expansion card and make any necessary hardware or software settings for your expansion card, such as jumpers. 2. Remove your computer systems cover and the bracket plate on the slot you intend to use. Keep the bracket for possible future use. 3. Carefully align the cards connectors and press firmly. 4. Secure the card on the slot with the screw you removed above. 5. Replace the computer systems cover. 6. Set up the BIOS if necessary (such as IRQ xx Used By ISA: Yes in PNP AND PCI SETUP) 7. Install the necessary software drivers for your expansion card.
3.7.2 Assigning IRQs for Expansion Cards
Some expansion cards need an IRQ to operate. Generally, an IRQ must be exclusively assigned to one use. In a standard design, there are 16 IRQs available but most of them are already in use, leaving 6 IRQs free for expansion cards. If your motherboard has PCI audio onboard, an additional IRQ will be used. If your motherboard also has MIDI enabled, another IRQ will be used, leaving 4 IRQs free.
3. H/W SETUP Expansion Cards
The following table lists the default IRQ assignments for standard PC devices. Use this table when configuring your system and for resolving IRQ conflicts.
Standard Interrupt Assignments
IRQ 2 3* 4* 5* 6 7* 8 9* 10* 11* 12* 13 14* 15* Priority N/A 10 Standard Function System Timer Keyboard Controller Programmable Interrupt Communications Port (COM2) Communications Port (COM1) Sound Card (sometimes LPT2) Floppy Disk Controller Printer Port (LPT1) System CMOS/Real Time Clock ACPI Mode when enabled IRQ Holder for PCI Steering IRQ Holder for PCI Steering PS/2 Compatible Mouse Port Numeric Data Processor Primary IDE Channel Secondary IDE Channel
*These IRQs are usually available for ISA or PCI devices.
Interrupt Request Table for this Motherboard
Interrupt requests are shared as shown by the following table: INT-A shared shared INT-B shared shared INT-C shared shared INT-D not shared
PCI slot 1 PCI slot 2 Onboard VGA Onboard LAN Onboard USB controller Onboard Audio AMR
IMPORTANT: If using PCI cards on shared slots, make sure that the drivers support Share IRQ or that the cards do not need IRQ assignments. Conflicts will arise between the two PCI groups that will make the system unstable or cards inoperable. ASUS CUSI-FX Users Manual

+12.0 Volts +5V Standby Power Good Ground +5.0 Volts Ground +5.0 Volts Ground +3.3 Volts +3.3 Volts
+5.0 Volts +5.0 Volts NC Ground Ground Ground Power Supply On Ground -12.0 Volts +3.3 Volts
CUSI-FX ATX Power Connector
28) Power Supply Thermal Sensor Connector (2-pin PWRTMP) If you have a power supply with thermal monitoring, connect its thermal sensor cable to this connector.
Power Supply Thermal Sensor
CUSI-FX Thermal Sensor Connector
3.9 Starting Up the First Time
1. After all connections are made, close the system case cover. 2. Be sure that all switches are off (in some systems, marked with ), and the power input voltage is set to comply with the standard used in your country (220V-240V or 110-120V). 3. Connect the power supply cord into the power supply located on the back of your system case according to your system users manual. 4. Connect the power cord into a power outlet that is equipped with a surge protector. 5. You may then turn on your devices in the following order: a. Your monitor b. External SCSI devices (starting with the last device on the chain) c. Your system power. For ATX power supplies, you need to switch on the power supply as well as press the ATX power switch on the front of the case. 6. The power LED on the front panel of the system case will light. For ATX power supplies, the system LED will light when the ATX power switch is pressed. The LED on the monitor may light up or switch between orange and green after the systems if it complies with green standards or if it has a power standby feature. The system will then run power-on tests. While the tests are running, the BIOS will alarm beeps or additional messages will appear on the screen. If you do not see anything within 30 seconds from the time you turn on the power, the system may have failed a power-on test. Recheck your jumper settings and connections or call your retailer for assistance.

Award BIOS Beep Codes

Beep One short beep when displaying logo Long beeps in an endless loop One long beep followed by three short beeps High frequency beeps when system is working Meaning No error during POST No DRAM installed or detected Video card not found or video card memory bad CPU overheated System running at a lower frequency

3. H/W SETUP Powering Up

7. During power-on, hold down <Delete> to enter BIOS setup. Follow the instructions in 4. BIOS SETUP. * Powering Off your computer: You must first exit or shut down your operating system before switching off the power switch. For ATX power supplies, you can press the ATX power switch after exiting or shutting down your operating system. If you use Windows 9X, click the Start button, click Shut Down, and then click Shut down the computer? The power supply should turn off after Windows shuts down. NOTE: The message You can now safely turn off your computer will not appear when shutting down with ATX power supplies.

4.2.1 BIOS Menu Bar

The top of the screen has a menu bar with the following selections: MAIN Use this menu to make changes to the basic system configuration. ADVANCED Use this menu to enable and make changes to the advanced features. POWER Use this menu to configure and enable Power Management features. BOOT Use this menu to configure the default system device used to locate and load the Operating System. EXIT Use this menu to exit the current menu or specify how to exit the Setup program. To access the menu bar items, press the right or left arrow key on the keyboard until the desired item is highlighted.

4.2.2 Legend Bar

At the bottom of the Setup screen you will notice a legend bar. The keys in the legend bar allow you to navigate through the various setup menus. The following table lists the keys found in the legend bar with their corresponding alternates and functions. Navigation Key(s)
<F1> or <Alt + H> <Esc> or (keypad arrow) or (keypad arrow) - (minus key) + (plus key) or spacebar <Enter> <Home> or <PgUp> <End> or <PgDn> <F5> <F10>
4. BIOS SETUP Menu Introduction

Function Description

Displays the General Help screen from anywhere in the BIOS Setup Jumps to the Exit menu or returns to the main menu from a submenu Selects the menu item to the left or right Moves the highlight up or down between fields Scrolls backward through the values for the highlighted field Scrolls forward through the values for the highlighted field Brings up a selection menu for the highlighted field Moves the cursor to the first field Moves the cursor to the last field Resets the current screen to its Setup Defaults Saves changes and exits Setup

General Help

In addition to the Item Specific Help window, the BIOS setup program also provides a General Help screen. This screen can be called up from any menu by simply pressing <F1> or the <Alt> + <H> combination. The General Help screen lists the legend keys with their corresponding alternates and functions.
Saving Changes and Exiting the Setup Program
See 4.7 Exit Menu for detailed information on saving changes and exiting the setup program.

Scroll Bar

When a scroll bar appears to the right of a help window, it indicates that there is more information to be displayed that will not fit in the window. Use <PgUp> and <PgDn> or the up and down arrow keys to scroll through the entire help document. Press <Home> to display the first page, press <End> to go to the last page. To exit the help window, press <Enter> or <Esc>.

4. BIOS SETUP Master/Slave Drives
NOTE: Before attempting to configure a hard disk drive, make sure you have the configuration information supplied by the manufacturer of the drive. Incorrect settings may cause your system to not recognize the installed hard disk. To allow the BIOS to detect the drive type automatically, select [Auto].
IMPORTANT: If your hard disk was already formatted on an older previous system, incorrect parameters may be detected. You will need to enter the correct parameters manually or use low-level format if you do not need the data stored on the hard disk. If the parameters listed differ from the ones used when the disk was formatted, the disk will not be readable. If the auto-detected parameters do not match the ones that should be used for your disk, you should enter the correct ones manually by setting [User Type HDD]. [User Type HDD]
Manually enter the number of cylinders, heads and sectors per track for your drive. Refer to your drive documentation or look on the drive for this information. If no drive is installed or if you are removing a drive and not replacing it, select [None]. Translation Method [LBA] Select the hard disk drive type in this field. When Logical Block Addressing is enabled, 28-bit addressing of the hard drive is used without regard for cylinders, heads, or sectors. Note that LBA Mode is necessary for drives with greater than 504MB in storage capacity. Configuration options: [LBA] [LARGE] [Normal] [Match Partition Table] [Manual] Cylinders This field configures the number of cylinders. Refer to your drive documentation to determine the correct value to enter into this field. NOTE: To make changes to this field, the Type field must be set to [User Type HDD] and the Translation Method field must be set to [Manual]. ASUS CUSI-FX Users Manual
Head This field configures the number of read/write heads. Refer to your drive documentation to determine the correct value to enter into this field. NOTE: To make changes to this field, the Type field must be set to [User Type HDD] and the Translation Method field must be set to [Manual]. Sector This field configures the number of sectors per track. Refer to your drive documentation to determine the correct value to enter into this field. NOTE: To make changes to this field, the Type field must be set to [User Type HDD] and the Translation Method field must be set to [Manual]. CHS Capacity This field shows the drives maximum CHS capacity calculated automatically by the BIOS from the drive information you entered. Maximum LBA Capacity This field shows the drives maximum LBA capacity calculated automatically by the BIOS from the drive information you entered. Multi-Sector Transfers [Maximum] This option automatically sets the number of sectors per block to the highest number supported by the drive. This field can also be configured manually. Note that when this field is automatically configured, the set value may not always be the fastest value for the drive. Refer to the documentation that came with your hard drive to determine the optimal value and set it manually. NOTE: To make changes to this field, the Type field must be set to [User Type HDD]. Configuration options: [Disabled] [2 Sectors] [4 Sectors] [8 Sectors] [16 Sectors] [32 Sectors] [Maximum] SMART Monitoring [Disabled] This allows the enabling or disabling of the S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) system which utilizes internal hard disk drive monitoring technology. This feature is normally disabled because system resources used in this feature may decrease system performance. Configuration options: [Disabled] [Enabled] PIO Mode [4] This option lets you set a PIO (Programmed Input/Output) mode for the IDE device. Modes 0 through 4 provide successively increased performance. Configuration options: [0] [1] [2] [3] [4] Ultra DMA Mode [Disabled] Ultra DMA capability allows improved transfer speeds and data integrity for compatible IDE devices. Set to [Disabled] to suppress Ultra DMA capability. NOTE: To make changes to this field, the Type field must be set to [User Type HDD]. Configuration options: [0] [1] [2] [3] [4] [Disabled]

Other options for Type: are: [CD-ROM] - for IDE CD-ROM drives [LS-120] - for LS-120 compatible floppy disk drives [ZIP-100] - for ZIP-100 compatible disk drives [MO] - for IDE magneto optical disk drives [Other ATAPI Device] - for IDE devices not listed here After using the legend keys to make your selections on this sub-menu, press the <Esc> key to exit back to the Main menu. When the Main menu appears, you will notice that the drive size appear in the field for the hard disk drive that you just configured.

4.3.2 Keyboard Features

Boot Up NumLock Status [On] This field enables users to activate the Number Lock function upon system boot. Configuration options: [Off] [On] Keyboard Auto-Repeat Rate [12/Sec] This controls the speed at which the system registers repeated keystrokes. Options range from 6 to 30 characters per second. Configuration options: [6/Sec] [8/Sec] [10/Sec] [12/Sec] [15/Sec] [20/Sec] [24/Sec] [30/Sec] Keyboard Auto-Repeat Delay [1/4 Sec] This field sets the time interval for displaying the first and second characters. Configuration options: [1/4 Sec] [1/2 Sec] [3/4 Sec] [1 Sec] 52 ASUS CUSI-FX Users Manual
Language [English] This allows selection of the BIOS displayed language. Currently only English is available. Supervisor Password [Disabled] / User Password [Disabled] These fields allow you to set the passwords. To set the password, highlight the appropriate field and press <Enter>. Type in a password and press <Enter>. You can type up to eight alphanumeric characters. Symbols and other keys are ignored. To confirm the password, type the password again and press the <Enter>. The password is now set to [Enabled]. This password allows full access to the BIOS Setup menus. To clear the password, highlight this field and press <Enter>. The same dialog box as above will appear. Press <Enter> and the password will be set to [Disabled]. A Note about Passwords
The BIOS Setup program allows you to specify passwords in the Main menu. The passwords control access to the BIOS during system startup. The passwords are not case sensitive. In other words, it makes no difference whether you enter a password using upper or lowercase letters. The BIOS Setup program allows you to specify two separate passwords: a Supervisor password and a User password. When disabled, anyone may access all BIOS Setup program functions. When enabled, the Supervisor password is required for entering the BIOS Setup program and having full access to all configuration fields.
Forgot the Password? If you forgot the password, you can clear the password by erasing the CMOS Real Time Clock (RTC) RAM. The RAM data containing the password information is powered by the onboard button cell battery. To erase the RTC RAM: (1) Unplug your computer, (2) Short the solder points, (3) Turn ON your computer, (4) Hold down <Delete> during bootup and enter BIOS setup to re-enter user preferences.

USB Function [Enabled] This motherboard supports Universal Serial Bus (USB) devices. Set to [Enabled] if you want to use USB devices. Configuration options: [Disabled] [Enabled] Onboard LAN [Enabled] (only on LAN model) This motherboard has an embedded LAN controller. If you want to use it, leave on the default setting [Enabled]. If you want to use an add-on LAN card, select [Disabled]. Configuration options: [Disabled] [Enabled] Onboard LAN Boot ROM [Disabled] When set to [Enabled], this field allows your computer to boot from the network using the onboard LAN controller boot ROM. Configuration options: [Disabled] [Enabled] Onboard PCI Audio Controller [Enabled] This motherboard has enbedded PCI audio controller. If you want to use it, leave on the default setting [Enabled]. If you want to use an add-on audio card, select [Disabled]. Configuration options: [Disabled] [Enabled]
4.4.2 I/O Device Configuration
Onboard AC97 Modem Controller [Auto] [Auto] allows the motherboards BIOS to detect whether you are using any modem device. If a modem device is detected, the onboard modem controller will be enabled; if no modem device is detected, the onboard modem/ audio controller will be disabled. If you have conflicts with the onboard modem controller, you may set the field to [Disabled]. Configuration options: [Disabled] [Auto] Floppy Disk Access Control [R/W] When set to [Read Only], this field protects files from being copied to floppy disks by allowing reads from the floppy disk drive but not writes. The setup default [R/W] allows both reads and writes. Configuration options: [R/W] [Read Only] Onboard FDC Swap A & B [No Swap] This field allows you to reverse the hardware drive letter assignments of your floppy disk drives. Configuration options: [No Swap] [Swap AB] Onboard Serial Port 1 [3F8H/IRQ4] Onboard Serial Port 2 [2F8H/IRQ3] These fields allow you to set the addresses for the onboard serial connectors. Serial Port 1 and Serial Port 2 must have different addresses. Configuration options: [3F8H/IRQ4] [2F8H/IRQ3] [3E8H/IRQ4] [2E8H/IRQ10] [Disabled]
4. BIOS SETUP I/O Device Config
UART2 Use Infrared [Disabled] When enabled, this field activates the onboard standard infrared feature and sets the second serial UART to support the infrared module connector on the motherboard. If your system already has a second serial port connected to the onboard COM2 connector, it will no longer work if you enable the infrared feature. Configuration options: [Disabled] [Enabled] Onboard Parallel Port [378H/IRQ7] This field sets the address of the onboard parallel port connector. If you disable this feature, Parallel Port Mode and ECP DMA Select configurations will not be available. Configuration options: [Disabled] [378H/IRQ7] [278H/IRQ5] Parallel Port Mode [ECP+EPP] This field allows you to set the operation mode of the parallel port. [Normal] allows normal-speed operation but in one direction only; [EPP] allows bidirectional parallel port operation; [ECP] allows the parallel port to operate in bidirectional DMA mode; [ECP+EPP] allows normal speed operation in a two-way mode. Configuration options: [Normal] [EPP] [ECP] [ECP+EPP] ECP DMA Select [3] This field allows you to configure the parallel port DMA channel for the selected ECP mode. This selection is available only if you select [ECP] or [ECP+EPP] in Parallel Port Mode above. Configuration options: [1] [3]

LPT Port (Line Printer Port) Logical device name reserved by DOS for the computer parallel ports. Each LPT port is configured to use a different IRQ and address assignment. MMX A set of 57 new instructions based on a technique called Single Instruction, Multiple Data (SIMD), which is built into the new Intel Pentium PP/MT (P55C) and Pentium II (Klamath) CPU as well as other x86-compatible microprocessors. The MMX instructions are designed to accelerate multimedia and communications applications, such as 3D video, 3D sound, video conference. OnNow The OnNow design initiative is a comprehensive, system-wide approach to system and device power control. OnNow is a term for PC that is always ON but appears OFF and responds immediately to user or other requests. The OnNow design initiative involves changes that will occur in the Microsoft Windows operating system, device drivers, hardware, and applications, and also relies on the changes defined in the Advanced Configuration and Power Interface (ACPI) specification. PC100 SDRAM is Intel's goal is to ensure that memory subsystems continue to support evolving platform requirements and to assure that memory does not become a bottleneck to system performance. It is especially important to ensure that the PC memory roadmap evolves together with the performance roadmaps for the processors, I/O and graphics. PCI Bus (Peripheral Component Interconnect Local Bus) PCI bus is a specification that defines a 32-bit data bus interface. PCI is a standard widely used by expansion card manufacturers. PCI Bus Master The PCI Bus Master can perform data transfer without local CPU help and furthermore, the CPU can be treated as one of the Bus Masters. PCI 2.1 supports concurrent PCI operation to allow the local CPU and bus master to work simultaneously. Plug and Play BIOS The ISA bus architecture requires the allocation of memory and I/O address, DMA channels and interrupt levels among multiple ISA cards. However, configuration of ISA cards is typically done with jumpers that change the decode maps for memory and I/O space and steer the DMA and interrupt signals to different pins on the bus. Further, system configuration files may need to be updated to reflect these changes. Users typically resolve sharing conflicts by referring to documentation provided by each manufacturer. For the average user, this configuration process can be unreliable and frustrating. Plug and play (PnP) BIOS eliminates the ISA add-on card hardware conflict problem. The PnP BIOS uses a memory block to define and remember each card's configuration, which allows the user to change the card's IRQs and DMA in BIOS either automatically or manually. POST (Power On Self Test) When you turn ON the computer, it will first run through the POST, a series of software-controlled diagnostic tests. The POST checks system memory, the motherboard circuitry, the display, the keyboard, the diskette drive, and other I/O devices. PS/2 Port PS/2 ports are based on IBM Micro Channel Architecture. This type of architecture transfers data through a 16-bit or 32-bit bus. A PS/2 mouse and/or keyboard may be used on ATX motherboards. RDRAM (Rambus DRAM) Developed by Rambus, Inc., this type of memory can deliver up to 1.6GB of data per second. RDRAM is the first interface standard that can be directly implemented on high performance VLSI components such as, CMOS DRAMs, memory controllers, and graphics/video ICs. ASUS CUSI-FX Users Manual 93

ROM (Read Only Memory) ROM is nonvolatile memory used to store permanent programs (called firmware) used in certain computer components. Flash ROM (or EEPROM) can be reprogrammed with new programs (or BIOS). SCSI (Small Computer System Interface) High speed multi-threaded I/O interface defined by the X3T9.2 committee of the American National Standards Institute (ANSI) for connecting many peripheral devices. The standard started from 10MBytes/sec to 160MBytes/sec available today. SDRAM (Synchronous DRAM) The SDRAM features a fully synchronous operation referenced to a positive edge clock whereby all operations are synchronized at a clock input which enables the coexistence of high performance and a simple user interface. SDRAM takes memory access away from the CPU's control; internal registers in the chips accept the request, and let the CPU do something else while the data requested is assembled for the next time the CPU talks to the memory. As they work on their own clock cycle, the rest of the system can be clocked faster. There is a version optimized for video cards, and main memory for motherboards. SPD for SDRAM module Serial Presence Detect (SPD) is most like an ID detect for SDRAM module, it using a EEPROM component on DIMM module for storing module configuration information inside. The Serial Presence Detect function is implemented using a 2048 bit EEPROM component. This nonvolatile storage device contains data programmed by the DIMM manufacturer that identifies the module type and various SDRAM organization and timing parameters. SSE (Streaming SIMD Extensions) A set of new instructions added to existing architectures that enables a better visual experience with an accelerated 3D geometry pipeline and support for new applications, such as real-time video encoding and speech recognition. System Disk A system disk contains the core file of an operating system and is used to boot up the operating system. UltraDMA Ultra DMA/33 is a "synchronous DMA" protocol designed by Intel. This function is included into Intel's PIIX4 chipset. The traditional IDE transfer only uses one edge of the data stroke as the data transfer. Ultra DMA/33 uses both edges of data strobe when the data is transferred. Hence, the data transfer rate is double of the PIO mode 4 or DMA mode 2 (16.6MB/s x2 = 33MB/s) on ATA-2 devices. Ultra ATA/66, also known as Ultra DMA/66, is an extension of current Ultra ATA/ 33 interface. This new high-speed interface has doubled the Ultra ATA/33 burst data transfer rate to 66.6 Mbytes/sec and maximized disk performance under current PCI local bus environment USB (Universal Serial Bus) A 4-pin serial cable bus that allows up to 127 plug and play computer peripherals such as keyboard, mouse, joystick, scanner, printer, modem, and monitor to share a bandwidth through a host scheduled token based protocol. This allows attaching or detaching while the host and other peripherals are in operation. Supports synchronous and asynchronous transfer types over the same set of wires up to 12Mbit/sec. USB 2.0 provides twice the transfer rate compared to USB 1.0 and competes with the 1394 standard. Wake-On-LAN Computer will automatically wake-up upon receiving a wake-up packet through a Network interface when it is under power soft-off, suspend or sleep mode.