This publication, including all photographs, illustrations and software, is protected under
international copyright laws, with all rights reserved. Neither this manual, nor any of the
material contained herein, may be reproduced without written consent of the author.
Version 2.0
Disclaimer
The information in this document is subject to change without notice. The manufacturer
makes no representations or warranties with respect to the contents hereof and specifically
disclaims any implied warranties of merchantability or fitness for any particular purpose.
The manufacturer reserves the right to revise this publication and to make changes from
time to time in the content hereof without obligation of the manufacturer to notify any
person of such revision or changes.
Trademark Recognition
Microsoft, MS-DOS and Windows are registered trademarks of Microsoft Corp.
MMX, Pentium, Pentium-II, Pentium-III, Pentium-4, Celeron are registered trademarks of
Intel Corporation.
Other product names used in this manual are the properties of their respective owners and
are acknowledged.
Federal Communications Commission (FCC)
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
•Reorient or relocate the receiving antenna
•Increase the separation between the equipment and the receiver
•Connect the equipment onto an outlet on a circuit different from that to which
the receiver is connected
•Consult the dealer or an experienced radio/TV technician for help
Shielded interconnect cables and a shielded AC power cable must be employed with this
equipment to ensure compliance with the pertinent RF emission limits governing this
device. Changes or modifications not expressly approved by the system’s manufacturer
could void the user’s authority to operate the equipment.
Preface
ii
Declaration of Conformity
This device complies with part 15 of the FCC rules. Operation is subject to the following
conditions:
•This device may not cause harmful interference, and
•This device must accept any interference received, including interference
that may cause undesired operation
Canadian Department of Communications
This class B digital apparatus meets all requirements of the Canadian Interference-causing
Equipment Regulations.
Cet appareil numérique de la classe B respecte toutes les exigences du Réglement sur le
matériel brouilieur du Canada.
About the Manual
The manual consists of the following:
Chapter 1
Introducing the Motherboard
Chapter 2
Installing the Motherboard
Chapter 3
Using BIOS
Chapter 4
Using the Motherboard Software
Chapter 5
VIA VT8237 SATA RAID
Setup Guide
Describes features of the motherboard.
Go to
Describes installation of motherboard
components.
Go to
Provides information on using the BIOS
Setup Utility.
Using VIA RAID Tool..............................................................................54
Chapter 1
Introducing the Motherboard
Introduction
Thank you for choosing the P4M890T-M motherboard. This motherboard is a high performance, enhanced function motherboard that supports LGA775 Intel CoreTM2 Duo/Celeron
D processors for high-end business or personal desktop markets.
The motherboard incorporates the P4M890 Northbridge (NB) and VT8237R plus/VT8237A
Southbridge (SB) chipsets. The Northbridge supports a Front Side Bus (FSB) frequency of
1066/800/533 MHz FSB and Hyper-Threading technology. The memory controller supports DDR2 memory DIMM frequencies of 533/400. It supports two DDR2 Sockets with up
to maximum memory of 4 GB. High resolution graphic via two PCI Express slots, intended
for Graphics Interface, are fully compliant to the PCI Express Base Specification revision
1.1.
The VT8237R plus/VT8237A Southbridge is a highly integrated peripheral controller, it
includes an integrated keyboard controller with PS2 mouse support, two-channel Serial
ATA/RAID hard disk controller, master mode enhanced Parallel IDE controller with full
scatter/gather capability and extension to UltraDMA-133/100/66 for 133/100/66 MB/sec
transfer rate, integrated USB 2.0 interface, supporting up to eight functional ports, and
OnNow/ACPI compliant advanced configuration and power management interface. The
VT8237R plus/VT8237A integrated networking MAC controller with standard MII interface to an external PHY for 100/10 Mb Base-T Ethernet.
This motherboard is equipped with advanced full set of I/O ports in the rear panel, including
PS/2 mouse and keyboard connectors, COM1, one VGA port, one optional Print port, four
USB ports, one optional LAN port, and audio jacks for microphone, line-in and 6-ch/8channel (optional) line-out.
1
Introducing the Motherboard
2
Feature
Processor
This motherboard uses an LGA775 type of Intel CoreTM2 Duo//Celeron D that carries
the following features:
•Accommodates Intel CoreTM2 Duo/Celeron D processors
•Supports a system bus (FSB) of 1066/800/533 MHz
•Supports “Hyper-Threading” technology CPU
“Hyper-Threading” technology enables the operating system into thinking it’s hooked
up to two processors, allowing two threads to be run in parallel, both on separate
“logical” processors within the same physical processor.
Chipset
The P4M890 Northbridge (NB) and VT8237R plus/VT8237A Southbridge (SB) chipset
is based on an innovative and scalable architecture with proven reliability and performance.
P4M890
(NB)
VT8237R plus/
8237A
(SB)
•High performance Northbridge with 1066/800/533 MHz FSB
for Pentium D/Pentium 4/Celeron D processors
The onboard Audio controller provides either of the following features:
•Compliant with AC’97 v2.3 CODEC
•Support 6-channel audio CODEC designed for PC multimedia systems
•Provides three analog line-level stereo inputs with 5-bit volume control:
Line-in, CD, AUX
•Meets Microsoft WHQL/WLP 2.0 audio requirements
•8-channel of DAC support 24/20/16-bit PCM format for 7.1 audio solution
•Supports 192K/96K/48K/44.1KHz DAC sample rate
•Power support: Digital: 3.3V; Analog: 3.5V~5.25V
•Meets Microsoft WHQL/WLP 2.x audio requirements
•Direct Sound 3DTM compatible
•DolbyR Digital Encoder output for consumer electronic application
•5.1 Channel High Definition Audio Codec
•ADCs support 44.1k/48k/96k sample rate
•Meets Microsoft WHQL/WLP 3.0x audio requirements
•Direct Sound 3D
TM
compatible
Expansion Options
The motherboard comes with the following expansion options:
•One PCI Express x16 slot for Graphic Interface
•One PCI Express x1 slot
•Two 32-bit PCI v2.3 compliant slots
•Two 40-pin IDE connectors supporting up to 4 IDE devices
•One floppy disk drive interface
•Two 7-pin SATA connectors
This motherboard supports UltraDMA bus mastering with transfer rates of 133/100/66
MB/s.
Integrated I/O
The motherboard has a full set of I/O ports and connectors:
•Two PS/2 ports for mouse and keyboard
•One serial port
•One VGA port
•Four USB ports
• One parellel port (optional)
•One LAN port (optional)
•Audio jacks for microphone, line-in and 6-ch/8-channel (optional) line-out
BIOS Firmware
This motherboard uses AMI BIOS that enables users to configure system features
including the following:
•Power management
•Wake-up alarms
•CPU parameters
•CPU and memroy timing
The firmware can also be used to set parameters for different processor clock speeds.
Some hardware specifications and software items are subject to change
without prior notice.
Introducing the Motherboard
3
4
Motherboard Components
Introducing the Motherboard
Table of Motherboard Components
LABEL COMPONENT
1 CPU Socket
2 CPU_FAN CPU cooling fan connector
3 DDRII1~2 240-pin DDR2 SDRAM slots
4 ATX1 Standard 24-pin ATX power connector
5 IDE1 Primary IDE connector
6 IDE2 Secondary IDE connector
7 CLR_CMOS Clear CMOS jumper
8 SATA1~2 Serial ATA connectors
9 PANEL1 Front Panel switch/LED header
LGA775 socket for Intel CoreTM2 Duo/
Celeron D processors
10 BIOS_WP * BIOS protect jumper 1 1 COM2 * Onboard serial port header
12 FDD Floppy diskette drive connector
13 USB 3~4 Front Panel USB headers
14 SPDIFO1 SPDIF out header
15 CD_IN1 Analog audio input header
16 AUDIO1 Front panel audio header
17 AUX_IN1 Auxiliary audio input header
18 PCI1~2 32-bit add-on card slots
19 IR * Infrared header
20 PCIEX1 PCI express x1 slot
21 PCIEX16 PCI express x16 slot
22 SYS_FAN System cooling fan connector
23 ATX_12V1 Auxiliary 4-pin power connector
24 LPT * Print port
5
* Stands for optional components
This concludes Chapter 1. The next chapter explains how to install the motherboard.
Introducing the Motherboard
6
Memo
Introducing the Motherboard
Chapter 2
Installing the Motherboard
Safety Precautions
•Follow these safety precautions when installing the motherboard
•Wear a grounding strap attached to a grounded device to avoid damage from
static electricity
•Discharge static electricity by touching the metal case of a safely grounded
object before working on the motherboard
•Leave components in the static-proof bags they came in
•Hold all circuit boards by the edges. Do not bend circuit boards
Choosing a Computer Case
There are many types of computer cases on the market. The motherboard complies with
the specifications for the Micro ATX system case. First, some features on the motherboard
are implemented by cabling connectors on the motherboard to indicators and switches on
the system case. Make sure that your case supports all the features required. Secondly, this
motherboard supports one floppy controller and four enhanced IDE drives. Make sure that
your case has sufficient power and space for all drives that you intend to install.
Most cases have a choice of I/O templates in the rear panel. Make sure that the I/O
template in the case matches the I/O ports installed on the rear edge of the motherboard.
This motherboard carries a Micro ATX form factor of 244 x 210 mm. Choose a case that
accommodates this form factor.
7
Installing the Motherboard in a Case
Refer to the following illustration and instructions for installing the motherboard in a case.
Most system cases have mounting brackets installed in the case, which correspond the holes
in the motherboard. Place the motherboard over the mounting brackets and secure the
motherboard onto the mounting brackets with screws.
Ensure that your case has an I/O template that supports the I/O ports and expansion slots
on your motherboard.
Installing the Motherboard
8
Do not over-tighten the screws as this can stress the motherboard.
Checking Jumper Settings
This section explains how to set jumpers for correct configuration of the motherboard.
Setting Jumpers
Use the motherboard jumpers to set system configuration options. Jumpers with more than
one pin are numbered. When setting the jumpers, ensure that the jumper caps are placed on
the correct pins.
The illustrations show a 2-pin jumper. When
the jumper cap is placed on both pins, the
jumper is SHORT. If you remove the jumper
cap, or place the jumper cap on just one pin,
the jumper is OPEN.
This illustration shows a 3-pin jumper. Pins
1 and 2 are SHORT
SHORT OPEN
Installing the Motherboard
Checking Jumper Settings
The following illustration shows the location of the motherboard jumpers. Pin 1 is labeled.
Jumper Settings
9
Jumper
CLR_CMOS
BIOS_WP
(Optional)
Type
3-pin
3-pin
Description
CLEAR CMOS
BIOS WRITE
PROTECT
Setting (default)
1-2: NORMAL
2-3: CMOS CLEAR
Before clearing the
CMOS, make sure to
turn off the system.
1-2: DISABLE
2-3: ENABLE
1
CLR_CMOS
1
BIOS_WP
To avoid the system unstability after clearing CMOS, we recommend
users to enter the main BIOS setting page to “Load Optimal Defaults” and then “Save Changes and Exit”.
Installing the Motherboard
10
Connecting Case Components
After you have installed the motherboard into a case, you can begin connecting the motherboard components. Refer to the following:
1Connect the CPU cooling fan cable to CPU_FAN.
2Connect the system cooling fan connector to SYS_FAN.
3Connect the case switches and indicator LEDs to the PANEL1.
4Connect the standard power supply connector to ATX1.
5Connect the auxiliary case power supply connector to ATX_12V1.
Connecting 20/24-pin power cable
Users please note that the 20-pin and 24-pin power cables can both be connected
to the ATX1 connector. With the 20-pin power cable, just align the 20-pin power
cable with the pin 1 of the ATX1 connector. However, using 20-pin power cable
may cause the system to become unbootable or unstable because of insufficient
electricity. A minimum power of 300W is recommended for a fully-configured
system.
With ATX v1.x power supply, users please
note that when installing 20-pin power cable,
the latche of power cable clings to the left
side of the ATX1 connector latch, just as the
20-pin power cable
24-pin power cable
picture shows.
With ATX v2.x power supply, users please
note that when installing 24-pin power cable,
the latches of power cable clings to the right
side of the ATX1 connector latch.
Installing the Motherboard
CPU_FAN: CPU FAN Power Connector
PinSignal NameFunction
1 GND System Ground
2+12VPower +12V
3 Sense Sensor
4 CONTROL CPU FAN control
Users please note that the fan connector supports the CPU cooling
fan of 1.1A~2.2A (26.4W max.) at +12V.
SYS_FAN: System cooling FAN Power Connector
PinSignal NameFunction
1GNDSystem Ground
2+12VPower +12V
3 Sense Sensor
ATX_12V1: ATX 12V Power Connector
PinSignal Name
1Ground
2Ground
3+12V
4+12V
11
ATX1: ATX 24-pin Power Connector
PinSignal NamePinSignal Name
1+3.3V13+3.3V
2+3.3V14-12V
3Ground15Ground
4+5V16PS_ON
5Ground17Ground
6+5V18Ground
7Ground19Ground
8PWRGD20-5V
9+5VSB21+5V
10+12V22+5V
11 +12V 23+5V
12 +3.3V 24Ground
Installing the Motherboard
12
Front Panel Connector
The front panel connector (PANEL1) provides a standard set of switch and LED connectors commonly found on ATX or Micro ATX cases. Refer to the table below for information:
PinSignalFunctionPinSignalFunction
1 HD_LED_P Hard disk LED(+)
3 HD_LED_N Hard disk LED(-)
5 RST_SW_N Reset Switch(-)
7 RST_SW_P Reset Switch(+)
9 RSVDReserved
* MSG LED (dual color or single color)
Hard Drive Activity LED
Connecting pins 1 and 3 to a front panel mounted LED provides visual indication that data
is being read from or written to the hard drive. For the LED to function properly, an IDE
drive should be connected to the onboard IDE interface. The LED will also show activity
for devices connected to the SCSI (hard drive activity LED) connector.
2 FP PWR/SLP *MSG LED(+)
4 FP PWR/SLP *MSG LED(-)
6 PWR_SW_P Power Switch(+)
8 PWR_SW_N Power Switch(-)
10 KeyNo pin
Power/Sleep/Message waiting LED
Connecting pins 2 and 4 to a single or dual-color, front panel mounted LED provides power
on/off, sleep, and message waiting indication.
Reset Switch
Supporting the reset function requires connecting pin 5 and 7 to a momentary-contact
switch that is normally open. When the switch is closed, the board resets and runs POST.
Power Switch
Supporting the power on/off function requires connecting pins 6 and 8 to a momentarycontact switch that is normally open. The switch should maintain contact for at least 50 ms
to signal the power supply to switch on or off. The time requirement is due to internal debounce circuitry. After receiving a power on/off signal, at least two seconds elapses before
the power supply recognizes another on/off signal.
Installing the Motherboard
Installing Hardware
Installing the Processor
Caution: When installing a CPU heatsink and cooling fan make sure that
you DO NOT scratch the motherboard or any of the surface-mount
resistors with the clip of the cooling fan. If the clip of the cooling fan
scrapes across the motherboard, you may cause serious damage to the
motherboard or its components.
On most motherboards, there are small surface-mount resistors near the
processor socket, which may be damaged if the cooling fan is carelessly
installed.
Avoid using cooling fans with sharp edges on the fan casing and the clips.
Also, install the cooling fan in a well-lit work area so that you can clearly
see the motherboard and processor socket.
Before installing the Processor
This motherboard automatically determines the CPU clock frequency and system bus
frequency for the processor. You may be able to change these settings by making changes
to jumpers on the motherboard, or changing the settings in the system Setup Utility. We
strongly recommend that you do not over-clock processors or other components to run
faster than their rated speed.
Warning: Over-clocking components can adversely affect the reliability
of the system and introduce errors into your system. Over-clocking can
permanently damage the motherboard by generating excess heat in
components that are run beyond the rated limits.
13
This motherboard has a LGA775 socket. When choosing a processor, consider the performance requirements of the system. Performance is based on the processor design, the clock
speed and system bus frequency of the processor, and the quantity of internal cache memory
and external cache memory.
Installing the Motherboard
14
CPU Installation Procedure
The following illustration shows CPU installation components.
A. Read and follow the instructions shown on the
sticker on the CPU cap.
B. Unload the cap
· Use thumb & forefinger to hold the
lifting tab of the cap.
· Lift the cap up and remove the cap
completely from the socket.
C. Open the load plate
· Use thumb & forefinger to hold the
hook of the lever, pushing down and pulling
aside unlock it.
· Lift up the lever.
· Use thumb to open the load plate. Be
careful not to touch the contacts.
D. Install the CPU on the socket
· Orientate CPU package to the socket.
Make sure you match triangle marker
to pin 1 location.
E. Close the load plate
· Slightly push down the load plate onto the
tongue side, and hook the lever.
· CPU is locked completely.
F. Apply thermal grease on top of the CPU.
G. Fasten the cooling fan supporting base onto
the CPU socket on the motherboard.
H. Make sure the CPU fan is plugged to the
CPU fan connector. Please refer to the CPU
cooling fan user’s manual for more detail
installation procedure.
1. To achieve better airflow rates and heat dissipation, we suggest that you
use a high quality fan with 3800 rpm at least. CPU fan and heatsink
installation procedures may vary with the type of CPU fan/heatsink sup
plied. The form and size of fan/heatsink may also vary.
2. DO NOT remove the CPU cap from the socket before installing a CPU.
3. Return Material Authorization (RMA) requests will be accepted only if the
motherboard comes with thecap on the LGA775 socket.
Installing the Motherboard
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