JETWAY P4845GLM User Manual

P4845GLM

USER'S MANUAL

M/B For Socket 478 Pentium 4 Processor

NO. G03-P4845G1A

Release date: October 2002

Trademark:

* Specifications and Information contained in this documentation are furnished for information use only, and are

subject to change at any time without notice, and should not be construed as a commitment by manufacturer.

USER’S NOTICE ..........................................................................................................1

MANUAL REVISION INFORMATION..........................................................................1

COOLING SOLUTIONS ..............................................................................................1

CHAPTER 1 INTRODUCTION OF P4845GLM MOTHERBOARD

1-1 FEATURE OF MOTHERBOARD.......................................................................... 2

1-2 SPECIFICATION ..................................................................................................... 3

1-3 PERFORMANCE LIST ...........................................................................................4

1-4 LAYOUT DIAGRAM & JUMPER SETTING ......................................................5

CHAPTER 2 HARDWARE INSTALLATION

2-1 HARDWARE INSTALLATION STEPS ................................................................7

2-2 CHECKING MOTHERBOARD'S JUMPER SETTING...................................... 7

2-3 INSTALL CPU ..........................................................................................................8

2-3-1 GLOSSARY ...................................................................................................8

2-3-2 ABOUT INTEL PENTIUM 4 478-PIN CPU ..............................................9

2-4 INSTALL MEMORY ............................................................................................... 10

2-5 EXPANSION CARD .................................................................................................11

2-5-1 PROCEDURE FOR EXPANSION CARD INSTALLATION ..................11

2-5-2 ASSIGNING IRQ FOR EXPANSION CARD ............................................11

2-5-3 INTERRUPT REQUEST TABLE FOR THIS MOTHERBOARD.......... 12

2-6 CONNECTORS, HEADERS.................................................................................... 12

2-6-1 CONNECTORS .............................................................................................12

2-6-2 HEADERS ......................................................................................................15

2-7 STARTING UP YOUR COMPUTER..................................................................... 18

CHAPTER 3 INTRODUCING BIOS

3-1 ENTERING SETUP.................................................................................................. 19

3-2 GETTING HELP....................................................................................................... 19

3-3 THE MAIN MENU ...................................................................................................20

3-4 STANDARD CMOS FEATURES............................................................................ 21

3-5 ADVANCED BIOS FEATURES .............................................................................22

3-6 ADVANCED CHIPSET FEATURES ..................................................................... 24

3-6-1 DRAM TIMING SETTINGS .......................................................................25

3-7 INTEGRATED PERIPHERALS............................................................................. 26

3-7-1 ONBOARD IDE FUNCTION ......................................................................26

3-7-2 ONBOARD DEVICE FUNCTION.............................................................. 27

3-7-3 ONBOARD SUPER IO FUNCTION .......................................................... 28

3-8 POWER MANAGEMENT SETUP .........................................................................29

3-8-1 PM TIMER RELOAD EVENTS................................................................. 30

3-9 PNP/PCI CONFIGURATION SETUP ................................................................... 30

3-9-1 IRQ RESOURCES .......................................................................................31

3-10 PC HEALTH STATUS............................................................................................ 32

3-11 MISCELLANEOUS CONTROL............................................................................33

3-12 LOAD STANDARD/OPTIMIZED DEFAULTS ..................................................34

3-13 SET SUPERVISOR/USER PASSWORD ..............................................................34

CHAPTER 4 DRIVER & FREE PROGRAM INSTALLATION

MAGIC INSTALL SUPPORTS WINDOWS 95/98/98SE/NT4.0/2000 .........................35

4-1 INF

INSTALL INTEL 845 CHIPSET SYSTEM DRIVER

.............................36

4-2 VGA

INSTALL INTEL 845G VGA DRIVER

..................................................37

4-3 SOUND

INSTALL ALC AUDIO CODEC DRIVER

.............................................37

4-4 PC-CILLIN INSTALL PC-CILLIN2002 ANTI-VIRUS PROGRAM.............. 38

4-5 MAGIC BIOS INSTALL BIOS LIVE UPDATE UTILITY...................................40

4-6 IAA

INSTALL INTEL APPLICATION ACCELERATOR SOFTWARE

....41

4-7 HOW TO INSTALL USB 2.0 DRIVER ..................................................................41

4-8 HOW TO DISABLE ON-BOARD SOUND............................................................ 42

4-9 HOW TO UPDATE BIOS ........................................................................................42

TABLE OF CONTENT

USER’S NOTICE

INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT MAY BE REPRODUCED,

TRANSMITTED OR TRANSLATED INTO ANY LANGUAGE IN ANY FORM OR BY ANY MEANS WITHOUT

WRITTEN PERMISSION OF THE MANUFACTURER.

THIS MANUAL CONTAINS ALL INFORMATION REQUIRED TO USE P4845GLM MOTHER-BOARD AND WE

DO ASSURE THIS MANUAL MEETS USER’S REQUIREM EN T BUT WILL CHANGE, CORRECT ANY TIME

WITHOUT NOTICE. MANUFACTURER PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY

KIND, AND WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTIAL OR CONSEQUENTIAL

DAMAGES (INCLUDING DAMANGES FOR LOSS OF PROFIT, LOSS OF BUSINESS, LOSS OF USE OF DATA,

INTERRUPTION OF BUSINESS AND THE LIKE).

PRODUCTS AND CORPORATE NAMES APPEARING IN THIS MANUAL MAY OR MAY NOT BE

REGISTERED TRADEMARKS OR COPYRIGHTS OF THEIR RESPECTIVE COMPANIES, AND THEY ARE

USED ONLY FOR IDENTIFICATION OR EXPLANATION AND TO THE OWNER’S BENEFIT, WITHOUT INTENT TO INFRINGE.

Manual Revision Information

Reversion Revision History Date

1.0 First Release October 2002

Item Checklist

P4845GLM Motherboard

Cable for IDE/Floppy

CD for motherboard utilities

□

Cable for USB Port 3/4 (Option)

P4845GLM User’s Manual

Intel Pentium 4 Processor Family Cooling Solutions

As processor technology pushes to faster speeds and higher performance, thermal management becomes increasingly crucial when building computer systems. Maintaining the proper thermal environment is key to reliable, long-term system operation. The overall goal in providing the proper thermal environment is keeping the processor below its specified maximum case temperature. Heatsinks induce improved processor heat dissipation through increased surface area and concentrated airflow from attached fans. In addition, interface materials allow effective transfers of heat from the processor to the heatsink. For optimum heat transfer, Intel recommends the use of thermal grease and mounting clips to attach the heatsink to the processor. When selecting a thermal solution for your system, please refer to the website below for collection of heatsinks evaluated and recommended by Intel for use with Intel processors. Note, those heatsinks are recommended for maintaining the specified Maximum T case requirement. In addition, this collection is not intended to be a comprehensive listing of all heatsinks that support Intel processors.

For vendor list of heatsink and fan, please visit : http://developer.intel.com/design/Pentium4/components/index

Chapter 1

Introduction of P4845GLM Motherboard

1-1 Feature of motherboard

The P4845GLM motherboard is design for use Intel Pentium 4 Processor in 478 Pin Package/Northwood Processor with the Intel 845GL Chipset delivers a high performance and professional desktop platform solution. Which utilize the Socket 478 design and the memory size expandable to 2.0GB.

The P4845GLM motherboard use the newest 845GL Chipset Supports 400MHz System Bus in data transfer rate. The motherboard offer ULTRA ATA

100

to provide speedier HDD

throughout that boosts overall system performance.

With integrated 2D/3D Graphics Accelerator which supports 256 bit graphics core, and supports hardware motion compensation assist for software MPEG/DVD decode, makes this board lower cost alternative to a video card. For those wanting even greater graphic performance.

These motherboards also has an integrated AC’97 2.1 CODEC on board support 3D surround positioning Audio, which is fully compatible with Sound Blaster Pro that gives you the best sound quality and compatibility.

With USB control as well as capability of expanding to 6 USB2.0 function ports to meet future USB demand, also these motherboards built-in hardware monitor function. This will monitor and protect your computer. These motherboards provided special design in hardware to protect BIOS from virus crash BIOS data.

These motherboard provides special function in BIOS Setup to setting CPU Host clock step by step increasing let users to approach over clocking.

P4845GLM provides high performance & meets future specification demand. It is really wise choice for your computer.

1-2 Specification

Spec Description

Design

∗

Micro ATX form factor 4 layers PCB size: 24.4x22.0cm

Chipset

∗

Intel 845GL Graphics Memory Controller Hub (GMCH)

Chipset

∗

Intel 82801DB I/O Controller Hub (ICH4) Chipset

CPU Socket

(mPGA478B Socket)

∗

Support Intel Pentium 4 478 Pin package utilizes Flip-Chip Pin

Grid Array (FC-PGA2) package processor

∗

Support CPU Frequency 400MHz for P4845GLM

∗

Support 1.5G∼2.8G 478 Pin Pentium 4 processor

∗

Reserves support for future Intel Pentium 4 processors

Memory Socket

∗

184-pin DDR SDRAM module socket x2

∗

Support DDR266/DDR200 DRAM

∗

Expandable to 2.0GB

Expansion Slot & Headers

∗

32-bit PCI slot x3

∗

CNR slot x1

Integrate IDE

∗

Two PCI IDE controllers support PCI Bus Mastering, ATA PIO/DMA and the ULTRA DMA 33/66/100 functions that deliver the data transfer rate up to 100 MB/s

Audio

∗

AC’97 Digital Audio controller integrated

∗

AC’97 2.1 Audio CODEC on board

∗

Sound Blaster Pro compliant

∗

Audio driver and utility included

BIOS

∗

Award 2MB Flash ROM

Multi I/O

∗

PS/2 keyboard and PS/2 mouse connectors

∗

Floppy disk drive connector x1

∗

Parallel port x1, Serial port x2

∗

USB 2.0 connector x2

∗

USB 2.0 headers x2 (connecting cable option)

∗

Audio connector Line-in, Line-out, MIC & Game Port

1-3 Performance List

The following performance data list is the testing result of some popular benchmark testing programs. These data are just referred by users, and there is no responsibility for different testing data values gotten by users (the different Hardware & Software configuration will result in different benchmark testing results.)

Performance Test Report

CPU:

Intel Pentium 4 1.9GHz mPGAB package

DRAM:

256MB DDR266 SDRAM x1 (SAMSUNG K4H280838B-TCB0)

VGA Expansion Card:

NVDIA Geforce2 MX400-64MB (1024x768 Hi-color)

Hard Disk Driver:

IBM DTLA-305040 (ATA-100)

BIOS:

Award Optimal default

OS:

Win 98SE

Frame Buffer

8M On Board

VGA

Geforce2

MX200

Geforce2

MX400

3D Mark 2000 3392 2917 5408 3D Mark 2001SE 1420 1217 2555 3D Winbench 2000 69.8 55.5 104 Final Reality 12.07 10.18 10.06 Content Creation Winstone 2000 44.6 43.8 44.5 Content Creation Winstone 2001 52.5 55.8 56.1 Content Creation Winstone 2002 19.9 20.8 20.8 Business Winstone 2001 46 46.1 46.7

Winbench 99: CPU Mark 99 113 110 113 FPU Winmark 99 6640 6620 6620 Business Disk Winmark99 5110 5230 5230 Hi-end Disk Winmark99 17100 18800 16600 Business Graphic Winmark 375 408 438 Hi-end Graphic Winmark 1110 1260 1270

SYS Mark 2000/2001 : SISMark 2000/2001 Rating (Internet Content Creation / Office

Productivity) SISMark 2000 211 (232/196) 215 (233/203) 216 (232/205) SISMark 2001 156 (172/142) 151 (172/133) 154 (171/138)

SISOFT Sandra 2002 : Dhrystone ALU MIPS 3577 3578 3582 Whetstone FPU MFLOPS 1141/2378 1149/2359 1142/2356 RAM Int Buffered iSSE2 MB/S 1900 2033 2033 RAM Float Buffered iSSE2 MB/S 1831 1947 1944 Integer SSE2 IT/S 7582 7570 7565 Floating-Point SSE2 IT/S 9200 9206 9219 QUAKE3 DEMO1 FPS 76.6 118.9 172.1 DEMO2 FPS 76.3 120.2 173.0

WCPUID System / CPU Clock 101/1918.93 101/1918.92 101/1918.93

1-4 Layout Diagram & Jumper Setting

Jumpers

Jumper Name Description Page

LINE-OUT

LINE-IN

MIC

GAME/MIDI PORT

COM1 VGA

PS/2 MOUSE

PS/2 Keyboard

USB

Front Panel Audio

PC99 Back Panel

CD Audio

ATX Power Conn.

ATX 12V Power Conn.

USB Port

PS2 KB/Mouse Port

CPU FAN

IR Connector

PCI Slot

Winbond W83627HF Chip

COM2 Connector

CNR Slot

On board AC97’ Codec

Selector (JP6)

Power FAN

Floppy Connector

Intel 845GL Chipset

Clear CMOS (JP8)

CPU Socket

DDR SDRAM DIMM x2

ATA 100 IDE Conn.

Intel 82801DB Chip

Wake On LAN

USB3 Port

Front Panel Connector

2M Flash ROM BIOS

CHS FAN

USB2 Port

(JP2)

Front Side Bus Frequency

JP1 CPU Frequency Select 3-pin Block P.7 JP8 CMOS RAM Clear 3-pin Block P.7 JP6 On board AC97’ Codec Selector 3-pin Block P.8

Connectors

Connector Name Description Page

PW2 ATX Power Connector 20-pin Block P.12 PW1 ATX 12V Power Connector 4-pin Block P.12 KBMS

PS/2 Mouse & PS/2 Keyboard Connector

6-pin Female P.13

USB1 USB Port Connector 4-pin Connector P.13 LPT1 Parallel Port Connector 25-pin Female P.13 GAME Audio/Game Connector 3 phone jack + 15-pin Connector P.13 VGA VGA Display Connector 15-pin Female Connector P.13 COM1 Serial Port COM1 Connector 9-pin Connector P.13 FLOPPY Floppy Driver Connector 34-pin Block P.13 IDE1/IDE2 Primary/Secondary IDE Connector 40-pin Block P.14

Headers

Header Name Description Page

COM2 Serial Port COM2 Header 9-pin Block P.15 Front AUDIO Line-In/Out, MIC Headers 9-pin Block P.15 USB2/USB3 USB Port Headers 9-pin Block P.15 HDLED Hard Drive Action LED Headers 2-pin Block P.15 RST Reset SW Headers 2-pin Block P.15 SPK Speaker Connector 4-pin Block P.16

PWRLED Power LED Headers 5-pin Block

P.16 SMI SMI headers 2-pin Block P.16 PSON Power On Headers 2-pin Block P.16 WOL Wake On-LAN Headers 3-pin Block P.16 PWRFAN, CHSFAN, CPUFAN

FAN Speed Headers 3-pin Block P.16

IR IR infrared module Headers 5-pin Block P.17 CDIN CD Audio-In Headers 4-pin Block P.17

Expansion Sockets

Socket/Slot Name Description Page

ZIF Socket 478 CPU Socket 478-pin mPGAB CPU Socket P.9 DDR1, DDR2 DDR Module Socket 184-pin DDR SDRAM Module

Expansion Socket

P.10

PCI1 ∼ PCI3

PCI Slot 32-bit PCI Local Bus Expansion slots P.11

CNR CNR Slot Communication Network Riser Slot

Chapter 2

Hardware installation

2-1 Hardware installation Steps

Before using your computer, you had better complete the following steps:

1. Check motherboard jumper setting

2. Install CPU and Fan

3. Install System Memory (DIMM)

4. Install Expansion cards

5. Connect IDE and Floppy cables, Front Panel /Back Panel cable

6. Connect ATX Power cable

7. Power-On and Load Standard Default

8. Reboot

9. Install Operating System

10. Install Driver and Utility

2-2 Checking Motherboard’s Jumper Setting

(1) CPU Frequency Select (3-pin) : JP1

CPU Clock JP1

AUTO 1-2 closed 100 (400) MHz 2-3 closed 133 (533) MHz Open

CPU Front Side Bus Frequency Select

100MHz

JP1

AUTO

133MHz

JP1

1 3

(2) CMOS RAM Clear (3-pin) : JP8

A battery must be used to retain the motherboard configuration in CMOS RAM short 1-2 pins of JP8 to store the CMOS data.

To clear the CMOS, follow the procedure below:

1. Turn off the system and unplug the AC power

2. Remove ATX power cable from ATX power connector

3. Locate JP8 and short pins 2-3 for a few seconds

4. Return JP8 to its normal setting by shorting pins 1-2

5. Connect ATX power cable back to ATX power connector

Note: When should clear CMOS

1. Troubleshooting

2. Forget password

3. After over clocking system boot fail

CMOS RAM Clear Setting

JP8

2-3 closed Clear CMOS

JP8

1 3

1-2 closed Normal (Default)

(3) On-board AC97’ Codec Selector (3-pin) : JP6

On-board AC97’ Codec Selector

JP6

2-3 closed Disabled

JP6

1 3

1-2 closed Enabled (Default)

2-3 Install CPU

2-3-1 Glossary

Chipset (or core logic) - two or more integrated circuits which control the interfaces between the system processor, RAM, I/O devises, and adapter cards. Processor slot/socket - the slot or socket used to mount the system processor on the motherboard.

Slot (AGP, PCI, ISA, RAM) - the slots used to mount adapter cards and system RAM. AGP - Accelerated Graphics Port - a high speed interface for video cards; runs at 1X

(66MHz), 2X (133MHz), or 4X (266MHz). PCI - Peripheral Component Interconnect - a high speed interface for video cards, sound cards, network interface cards, and modems; runs at 33MHz. ISA - Industry Standard Architecture - a relatively low speed interface primarily used for sound cards and modems; runs at approx. 8MHz.

Serial Port - a low speed interface typically used for mouse and external modems. Parallel Port - a low speed interface typically used for printers. PS/2 - a low speed interface used for mouse and keyboards.

USB - Universal Serial Bus - a medium speed interface typically used for mouse, keyboards,

scanners, and some digital cameras. Sound (interface) - the interface between the sound card or integrated sound connectors and

speakers, MIC, game controllers, and MIDI sound devices.

LAN (interface) - Local Area Network - the interface to your local area network. BIOS (Basic Input/Output System) - the program logic used to boot up a computer and

establish the relationship between the various components. Driver - software, which defines the characteristics of a device for use by another device or other software. Processor - the "central processing unit" (CPU); the principal integrated circuit used for doing the "computing" in "personal computer"

Front Side Bus Frequency -

the working frequency of the motherboard, which is generated

by the clock generator for CPU, DRAM and PCI BUS.

CPU L2 Cache -

the flash memory inside the CPU, normally Athlon CPU has 256K or above,

while Duron will have 64K.

2-3-2 About Intel Pentium 4 478-pin CPU

This motherboard provides a 478-pin surface mount, Zero Insertion Force (ZIF) socket, referred to as the mPGA478B socket supports Intel Pentium 4 processor in the 478 Pin package utilizes Flip-Chip Pin Grid Array (FC-PGA2) package technology.

The CPU that comes with the motherboard should have a cooling FAN attached to prevent overheating. If this is not the case, then purchase a correct cooling FAN before you turn on your system.

WARNING!

Be sure that there is sufficient air circulation across the processor’s heatsink and CPU cooling FAN is working correctly, otherwise it may cause the processor and motherboard overheat and damage, you may install an auxiliary cooling 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 level sideways away from the socket then upward to a 90-degree angle. Insert the CPU with the correct orientation as shown below. The notched corner should point toward the end of the level. Because the CPU has a corner pin for two of the four corners, the CPU will only fit in the orientation as shown.

CPU ZIF mPGAB Socket

Colden Arrow

mPGA478B

When you put the CPU into the ZIF socket. No force require to insert of the CPU, then press the level to Locate position slightly without any extra force.

2-4 Install Memory

This motherboard provides two 184-pin DUAL INLINE MEMORY MODULES (DIMM) sites for memory expansion available from minimum memory size of 64MB to maximum memory size of 2.0GB DDR SDRAM.

Valid Memory Configurations

Bank 184-Pin DIMM Total Memory

Bank 0, 1 (DDR1) DDR200/DDR266

DDR SDRAM Module

64MB∼1.0GB

Bank 2, 3 (DDR2) DDR200/DDR266

DDR SDRAM Module

64MB∼1.0GB

Total System Memory (Max. 2.0GB) 2

64MB∼2.0GB

NOTE!

Make sure the installed memory are DDR266 SDRAM support 133MHz memory clock, otherwise the system may hang during startup.

Generally, installing DDR SDRAM modules to your motherboard is very easy, you can refer to figure 2-4 to see what a 184-Pin DDR200/DDR266 DDR SDRAM module looks like.

DI MM2 (BANK2+ BANK3 )

DI MM1 (BANK0+ BANK1 )

NOTE!

When you install DIMM module fully into the DIMM socket the eject tab should be locked into the DIMM module very firmly and fit into its indention on both sides.

WARNING!

For the DDR SDRAM CLOCK is set at 133MHz, use only DDR266-compliant DDR Modules. When this motherboard operate at 133Mhz, most system will not even boot if non-compliant modules are used because of the strict timing issues, if your SDR Modules are not DDR266-compliant, set the DDR SDRAM clock to 100MHz to ensure system stability.

2-5 Expansion Cards

Figure 2-4

WARNING!

Turn off your power 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.

2-5-1 Procedure For Expansion Card Installation

1. Read the documentation for your expansion card and make any necessary hardware or software setting for your expansion card such as jumpers.

2. Remove your computer’s cover and the bracket plate on the slot you intend to use.

3. Align the card’s connectors and press firmly.

4. Secure the card on the slot with the screen you remove above.

5. Replace the computer system’s cover.

6. Set up the BIOS if necessary.

7. Install the necessary software driver for your expansion card.

2-5-2 Assigning IRQs For Expansion Card

Some expansion cards need an IRQ to operate. Generally, an IRQ must exclusively assign to one use. In a standard design, there are 16 IRQs available but most of them are already in use.

Standard Interrupt Assignments

IRQ Priority Standard function

0 N/A System Timer 1 N/A Keyboard Controller 2 N/A Programmable Interrupt 3 * 8 Communications Port (COM2) 4 * 9 Communications Port (COM1) 5 * 6 Sound Card (sometimes LPT2) 6 * 11 Floppy Disk Controller 7 * 7 Printer Port (LPT1) 8 N/A System CMOS/Real Time Clock

9 * 10 ACPI Mode when enabled 10 * 3 IRQ Holder for PCI Steering 11 * 2 IRQ Holder for PCI Steering 12 * 4 PS/2 Compatible Mouse Port 13 N/A Numeric Data Processor 14 * 5 Primary IDE Channel 15 * 1 Secondary IDE Channel

* These IRQs are usually available for ISA or PCI devices.

2-5-3 Interrupt Request Table For This Motherboard

Interrupt request are shared as shown the table below:

INT A INT B INT C INT D INT E INT F INT G INT H

Slot 1

√

Slot 2

√

Slot 3

√

Onboard VGA

√

Onboard LAN

√

Onboard USB 1

√

Onboard USB 2

√

Onboard USB 3

√

AC97/MC97

√

IMPORTANT!

If using PCI cards on shared slots, make sure that the drivers support “Shared IRQ” or that the cards don’t need IRQ assignments. Conflicts will arise between the two PCI groups that will make the system unstable or cards inoperable.

2-6 Connectors, Headers

2-6-1 Connectors

(1) Power Connector (20-pin block) : PW2

ATX Power Supply connector. This is a new defined 20-pins connector that usually

comes with ATX case. The ATX Power Supply allows to use soft power on momentary switch that connect from the front panel switch to 2-pins Power On jumper pole on the motherboard. When the power switch on the back of the ATX power supply turned on, the full power will not come into the system board until the front panel switch is momentarily pressed. Press this switch again will turn off the power to the system board.

PIN ROW2 ROW1 1 3.3V 3.3V 2 -12V 3.3V 3 GND GND 4 Soft Power On 5V 5 GND GND 6 GND 5V 7 GND GND 8 -5V Power OK 9 +5V +5V (for Soft Logic) 10 +5V +12V

Pin 1

(2) ATX 12V Power Connector (4-pin block) : PW1

This is a new defined 4-pins connector that usually comes with ATX Power Supply. The

ATX Power Supply which fully support Pentium 4 processor must including this connector for support extra 12V voltage to maintain system power consumption. Without this connector might cause system unstable because the power supply can not provide sufficient current for system.

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JETWAY P4845GLM User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual