Asus A7N8X – страница 2

2.2 Layout contents

CPU, Memory and Expansion Slots

1) Socket 462 p. 12 CPU Support

2) DIMM 1/2 p. 14 System Memory Support

3) PCI 1/2/3 p. 18 32-bit PCI Bus Expansion Slots

4) AGP 4x p. 18 Accelerated Graphics Slot

Motherboard Settings (Switches and Jumpers)

1) BSEL0, BSEL1 p. 19 CPU:DRAM Frequency Setting (Various)

2) KBPWR p. 20 Keyboard Wake Up (+5V / +5VSB)

3)

USBPWR_01,_23,_45

p. 21 USB Device Wake-up (Disable/Enable)

4) CLRTC p. 22 Clear RTC RAM (CLRTC)

Connectors

1) PS2KBMS p. 23 PS/2 Mouse Port (6 pin female)

2) PS2KBMS p. 23 PS/2 Keyboard Port (6 pin female)

3) USB p. 24 Universal Serial Bus Ports 0, 1

(Two x 4 pin female)

4) COM1 / COM2 p. 24 Serial Ports (One 9-pin, One 10-1 pin)

5) VGA p. 25 Monitor Output Connector (Blue 15-pin)

6) PRINTER p. 25 Parallel Port (25 pin female)

7) GAME_AUDIO p. 25 Game/MIDI Ports (Gold 15-pin) (Optional)

8) AUDIO p. 26 Audio Connectors (Three 1/8” AUDIO) (Optional)

9) IDELED p. 26 IDE Activity LED (Two 40-1 pin)

10) FLOPPY p. 27 Floppy Disk Drive Connector (34-1 pin)

11) PRIMARY / SEC. IDE p. 27 IDE Connectors (Two 40-1 pin)

12) CPU_FAN p. 28

CPU Fan Connector (3 pin)

13) AAPANEL p. 28 ASUS Front Panel Audio Connector (10 pin)

14) ATXPWR p. 29 ATX Power Supply Connector (20 pin)

15) SMB p. 29 SMBus Connector (6-1 pin)

16)

CD_IN1, AUX

p. 30 Internal Audio Connectors (Two 4 pin)

(Optional)

17) SPDIF1 p. 30 Digital Audio Interfaces (4-1 pin SPDIF1)

(Optional)

18) USB_23, _45 p. 31 USB Headers (Two 10-1 pin)

18) IR p. 31 Infrared module connector (Two 5-1 pin)

20) PWR_LED (Panel) p. 32

System Power LED Lead (3-1 pin)

21) KEYLOCK (Panel) p. 32 Keyboard Lock Switch Lead (2 pin)

22) SPEAKER (Panel) p. 32 System Warning Speaker Lead (4 pin )

23) LED (Panel) p. 32 System Message LED Lead (2 pin)

24) SMI (Panel) p. 32 System Management Interrupt Lead (2 pin)

25) PWR (Panel) p. 32 ATX Power Switch / Soft-Off Switch Lead (2 pin)

26) RESET (Panel) p. 32 Reset Switch Lead (2 pin)

ASUS A7N266-VM motherboard user guide

9

2.3 Before you proceed

Take note of the following precautions before you install motherboard

components or change any motherboard settings.

CAUTION!

1. Unplug the power cord from the wall socket before touching any

component.

2. Use a grounded wrist strap or touch a safely grounded object or to a

metal object, such as the power supply case, before handling

components to avoid damaging them due to static electricity.

3. Hold components by the edges and do not to touch the ICs on them.

4. Whenever you uninstall any component, place it on a grounded

antistatic pad or in the bag that came with the component.

5. Before you install or remove any component, ensure that the

ATX power supply is switched off or the power cord is detached

from the power supply. Failure to do so may cause severe damage

to the motherboard, peripherals, and/or components.

NOTE! When lit, the onboard LED indicates that the system is ON, in

sleep mode or in soft-off mode, not powered OFF. See the illustration

below.

A7N266-VM

PLED

®

ON

OFF

Standby

Powered

Power

Off

A7N266-VM Onboard LED

10

Chapter 2: Hardware information

2.4 Central Processing Unit (CPU)

2.4.1 Overview

The motherboard provides a Socket A (462) for CPU installation. AMD

processors offer gigahertz speeds to support all the latest computing platforms

™

and applications. The A7N266-VM supports Athlon

XP processors with

“QuantiSpeed” data processing, large data caches, 3D enhancements and

266Mhz bus speeds.

A7N266-VM

CPU NOTCH

TO INNER

CORNER

LOCK

®

LEVER

CPU NOTCH

AMD™ CPU

A7N266-VM Socket 462

Each AMD CPU has a “marked” corner. This corner is usually indicated with

a notch, and/or a golden square or triangle. Refer to this indicator while

orienting the CPU. See the next page for installation details.

A fan and heatsink should be attached to the CPU to prevent overheating.

ASUS A7N266-VM motherboard user guide

11

2.4.2 Installing the CPU

Follow these steps to install a CPU:

1. Locate the Socket 462 and open it by

pulling the lever gently sideways away

from the socket. Then lift the lever

upwards. The socket lever must be fully

opened (90 to 100 degrees).

2. Insert the CPU with the correct

orientation. The notched or golden

corner of the CPU must be oriented

toward the inner corner of the socket

base nearest to the lever hinge.

CAUTION! The CPU should drop easily into place. Do not force the

CPU into the socket to avoid bending the pins. If the CPU does not fit,

check its alignment and look for bent pins.

4. Once completely inserted, press the CPU firmly and close the socket

lever until it snaps shut.

5. Place the CPU fan and heatsink on the CPU. The heatsink should entirely

cover the CPU. Carefully attach the heatsink locking brace to the plastic

clips on the socket base. With the added weight of the CPU fan and

heatsink locking brace, no extra force is required to keep the CPU in

place

CAUTION! Take care not to scrape the motherboard surface when

mounting a clamp-style processor fan, or else damage may occur. When

mounting a heatsink onto your CPU, make sure that exposed CPU

capacitors do not touch the heatsink, or damage may occur!

NOTE! Do not neglect to set the correct Bus Frequency and leave the

CPU Multiple setting at default to avoid start-up problems.

12

Chapter 2: Hardware information

2.5 System memory

2.5.1 Overview

This motherboard uses only Double Data Rate (DDR) Synchronous Dynamic

Random Access Memory (SDRAM) Dual Inline Memory Modules (DIMMs).

These sockets support up to 1GB system memory using non-ECC PC200/

266 DIMMs.

Each DIMM socket/module is two-sided: each side defines one “row” of

memory. DIMMs come in combinations of single or double-sided types

ranging through 64MB, 128MB, 256MB, 512MB

to form a total memory size of 64MB to 1GB.

~ Two (2) sockets are available for both 266MHz-PC2100 or 200MHz-PC1600

DDR DIMMs to form a memory size of 64MB to 1GB.

A7N266-VM

104 Pins

®

80 Pins

A7N266-VM 184-Pin DDR

DIMM Sockets

CAUTION! DIMMs are keyed to fit into notches with only one direction.

DO NOT force a DIMM into a socket to avoid damaging the DIMM.

• DIMMs with more than 18 chips are not supported.

• ASUS motherboards support SPD (Serial Presence Detect)DIMMs.

This is the memory of choice for best performance vs. stability

• BIOS shows DDR SDRAM memory on bootup screen.

ASUS A7N266-VM motherboard user guide

13

2) Keyboard Wake Up (3 pin KBPWR1)

This allows you to disable or enable the keyboard power up function. Retain

the default setting of [1-2] to use your keyboard by pressing <Spacebar> to

power up your computer. This feature requires an ATX power supply that

can supply at least 720mA on the +5VSB lead. (The computer will not power

ON if you set to [1-2] but do not have the correct ATX power supply.)

A7N266-VM

KBPWR1

1

2

2

3

+5V

+5VSB

®

(Default)

A7N266-VM Keyboard Power Setting

NOTE! This jumper must be set in conjunction with Wake On PS2 KB/

PS2 Mouse in 4.5.1 Power Up Control.

20

Chapter 2: Hardware information

3) USB Device Wake-up (2x3 pin USBPWR01, 23, 45)

Set these jumpers to +5V to allow wake up from the S1 sleep state (CPU

stopped; RAM refreshed; system running in low power mode) using the

connected USB devices. Set to +5VSB to allow wake up from S3 sleep state

(no power to CPU; RAM in slow refresh; power supply in reduced power

mode). The default setting for the three jumpers is 1-2 to select +5V (because

not all computers have the appropriate power supply).

The USBPWR01 jumper activates the rear panel USB ports. The USBPWR23

jumper activates the internal header, USB23

A7N266-VM

USBPWR01

1

2

2

3

+5V

+5VSB

(Default)

®

USBPWR45

USBPWR23

12

23

+5V

+5VSB

A7N266-VM USB Device Wake Up

(Default)

NOTE! This feature requires an ATX power supply that can supply at

least 2A on the +5VSB lead when these jumpers are set to +5VSB.

Otherwise, the system does not power up. The total current consumed

must NOT exceed the power supply capability (+5VSB) whether under

normal working conditions or in sleep mode.

ASUS A7N266-VM motherboard user guide

21

5) Clear RTC RAM (CLR_CMOS)

This jumper clears the Real Time Clock (RTC) RAM of date, time, and system

setup parameters in CMOS. The RAM data in CMOS is powered by the

onboard button cell battery.

To erase the RTC RAM:

1. Turn OFF the computer and unplug the power cord.

2. Remove the battery.

3. Short the solder points momentarily with a paper clip or other

delicate metal instrument.

4. Re-install the battery.

5. Plug the power cord and turn ON the computer.

6. Hold down the <Del> key during the boot process and enter BIOS

setup to re-enter data.

A7N266-VM

CLRTC

12

23

®

Normal Clear CMOS

(Default)

A7N266-VM Clear RTC RAM

22

Chapter 2: Hardware information

2.8 Connectors

This section describes and illustrates the internal connectors on the

motherboard.

WARNING! Some pins are used for connectors or power sources. These

are clearly distinguished from jumpers in the Motherboard Layout. Placing

jumper caps over these connector pins will cause damage to your

motherboard.

IMPORTANT! Ribbon cables should always be connected with the red

stripe to Pin 1 in the connector scoket.

1) PS/2 Mouse Port (Green 6-pin PS2KBMS)

The system automatically directs IRQ12 to the PS/2 mouse if one is detected.

If no mouse is detected, IRQ12 become available to expansion cards. See

PS/2 Mouse Function Control in 4.4 Advanced Menu.

PS/2 Mouse (6-pin female)

2) PS/2 Keyboard Port (Purple 6-pin PS2KBMS)

This connection is for a standard keyboard using an PS/2 plug (mini DIN).

This connector does not allow standard AT size (large DIN) keyboard plugs.

You may use a DIN to mini DIN adapter on standard AT keyboards.

PS/2 Keyboard (6-pin female)

ASUS A7N266-VM motherboard user guide

23

3) Universal Serial Bus Ports 0 and 1 (Black two x 4-pin USB)

Two USB ports are available for connecting USB devices.

Universal Serial Bus (USB)

4) Serial Ports

(Teal/Turquoise, One 9-pin COM1, One 10-1 pin COM2)

One serial port can be used for pointing devices or other serial devices. The

other is available as an onboard header. To enable these ports, see Onboard

Serial Port 1 / Onboard Serial Port 2 in 4.4.2 I/O Device Configuration

for the settings.

COM 1

Serial Port (9-pin male)

A7N266-VM

COM2

®

PIN 1

A7N266-VM Serial COM2 Bracket

24

Chapter 2: Hardware information

5) Monitor Output Connector (Blue 15-pin VGA)

This connector supports output to a VGA compatible screen device.

VGA Monitor (15-pin female)

6) Parallel Port (Burgundy 25-pin PRINTER)

You can enable the parallel port and choose the IRQ through Onboard

Parallel Port (see 4.4.2 I/O Device Configuration).

NOTE! Serial printers must be connected to the serial port.

Parallel (Printer) Port (25-pin female)

7) Game/MIDI Ports (Gold 15-pin GAME_AUDIO) (Optional)

This connector supports a joystick or a game pad for playing games, and

MIDI devices for playing or editing audio files.

Joystick/MIDI (15-pin female)

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25

8) Audio Connectors (Three 1/8” AUDIO) (Optional)

The Line Out (lime) connects a headphone or speakers. The Line In (light

blue) connects a tape players or other audio sources. The Mic (pink) connects

a microphone.

NOTE! The functions of the audio connectors Line Out, Line In, and Mic

change when the 6-channel audio feature is enabled. Software driver

support for 6-channel audio is available at the Asus website:

www.asus.com

MicLine InLine Out

1/8" Stereo Audio Connectors

9) IDE Activity LED (2-pin IDELED)

This connector supplies power to the cabinet’s IDE activity LED. Read and

write activity by devices connected to the Primary or Secondary IDE

connectors cause the IDE LED to light up.

A7N266-VM

IDELED

®

TIP: If the case-mounted LED does not

light, try reversing the 2-pin plug.

A7N266-VM IDE Activity LED

26

Chapter 2: Hardware information

10)Floppy Disk Drive Connector (34-1 pin FLOPPY)

This connector supports the provided floppy drive ribbon cable. After

connecting the single end to the board, connect the two plugs on the other

end to the floppy drives. (Pin 5 is removed to prevent inserting in the

wrong orientation when using ribbon cables with pin 5 plugged).

A7N266-VM

®

NOTE: Orient the red markings on

the floppy ribbon cable to PIN 1

PIN 1

A7N266-VM Floppy Disk Drive Connector

11) Primary (Blue) / Secondary (Black) IDE Connectors

(40-1 pin PRIMARY IDE and SECONDARY IDE)

The Primary and Secondary IDE connectors support the IDE hard disk ribbon

cables supplied with the motherboard. Connect the cable’s blue connector

to the motherboard’s primary IDE connector (recommended) or the secondary

IDE connector. Connect the opposite end of the cable to your UltraDMA100/

66 device (hard disk drive). If a second hard disk drive is connected,

youmay reset its jumper to Slave or Master/Slave mode. Non-UltraDMA100/

66 devices should be connected to the secondary IDE connector. BIOS

supports specific device bootup (see 4.6 Boot Menu.)

IMPORTANT! UltraDMA100 IDE devices require a 40-pin 80-conductor

cable and RAID arrays only operate with such cables.

A7N266-VM

NOTE: Orient the red markings

(usually zigzag) on the IDE

®

ribbon cable to PIN 1.

Secondary IDE Connector

Primary IDE Connector

PIN 1

A7N266-VM IDE Connectors

ASUS A7N266-VM motherboard user guide

27

12) CPU Fan Connector (3 pin CPU_FAN)

Three fan connectors support cooling fans of 350mA (4.2 Watts) or less.

Orient the fans so that airflow flows across the onboard heat sinks instead of

expansion slots. The fan wiring and plug vary depending on the type

employed. Connect the fan cable to the connector, ensuring that the black

wire matches the ground pin. (Use the “Rotation” signal only with a specially

designed fan with a rotation signal. You can monitor the Rotations Per Minute

(RPM) using ASUS PC Probe (see 6. SOFTWARE REFERENCE).

WARNING! Make sure to connect the fan cables to the fan connectors.

Lack of sufficient airflow within the system could cause damage to the

motherboard. These are not jumpers, do not place jumper caps over

these connectors!

A7N266-VM

CPU_FAN

GND

+12V

Rotation

®

A7N266-VM 12-Volt Cooling Fan Power

13) ASUS Front Panel Audio Connector (10 pin AAPANEL)

This connector supports an optional front audio panel. Attach the Front Panel

audio cable to the AAPANEL connector for audio control.

A7N266-VM

AAPANEL1

MIC

AGND

MICPWR

NC

®

LineOut_FR

LineOut_RR

NC

LineOut_FL

LineOut_RL

A7N266-VM Audio Panel Connector

28

Chapter 2: Hardware information