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Disclaimer:
Specifications and information contained in this manual are furnished for informational use only and subject to change without notice, and should not be constructed
as a commitment by ASRock. ASRock assumes no responsibility for any errors or
omissions that may appear in this manual.
With respect to the contents of this manual, ASRock does not provide warranty of
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In no event shall ASRock, its directors, officers, employees, or agents be liable for
any indirect, special, incidental, or consequential damages (including damages for
loss of profits, loss of business, loss of data, interruption of business and the like),
even if ASRock has been advised of the possibility of such damages arising from a n y
defect or error in the manual or product.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
Thank you for purchasing ASRock P4 Combo motherboard, a reliable motherboard
produced under ASRock’s consistently stringent quality control. It delivers excellent
performance with robust design conforming to ASRock’s commitment to quality and
endurance.
In this manual, chapter 1 and 2 contain introduction of the motherboard and step-bystep guide to the hardware installation. Chapter 3 and 4 contain the configuration
guide to BIOS setup and information of the Support CD.
Because the motherboard specifications and the BIOS software might be
updated, the content of this manual will be subject to change without
notice. In case any modifications of this manual occur, the updated
version will be available on ASRock website without further notice. You
may find the latest memory and CPU support lists on ASRock website as
well. ASRock website
1.1 Package Contents
ASRock P4 Combo Motherboard
(ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm)
ASRock P4 Combo Quick Installation Guide
ASRock P4 Combo Support CD (including LGA 775 CPU Installation Live Demo)
One 80-conductor Ultra ATA 66/100 IDE Ribbon Cable
One Ribbon Cable for a 3.5-in Floppy Drive
One Serial ATA (SATA) Data Cable
One Serial ATA (SATA) HDD Power Cable (Optional)
One ASRock I/O PlusTM Shield
http://www.asrock.com
5
1.2 Specifications
Platform:ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm
IDE2: ATA 100 / Ultra DMA Mode 5
Supports up to 4 IDE devices
Serial ATA:Supports up to 2 SATA devices at 1.5Gb/s data transfer rate
No Support for “RAID” and “Hot Plug” functions
Floppy Port:Supports up to 2 floppy disk drives
Audio:5.1 channels AC’97 Audio
PCI LAN:Speed: 802.3u (10/100 Ethernet), supports Wake-On-LAN
Hardware Monitor: CPU temperature sensing,
Motherboard temperature sensing,
CPU overheat shutdown to protect CPU life
(ASRock U-COP)(see CAUTION 3),
CPU fan tachometer,
Chassis fan tachometer,
Voltage monitoring: +12V, +5V, +3V, Vcore
PCI slots:4 PCI slots with PCI Specification 2.3
AGP slot:1 AGP slot, supports 1.5V, 8X/4X AGP card (see CAUTION 4)
USB 2.0:8 USB 2.0 ports:
includes 6 default USB 2.0 ports on the rear panel,
plus one header to support 2 additional USB 2.0 ports
(see CAUTION 5)
ASRock I/O PlusTM: 1 PS/2 mouse port,
1 PS/2 keyboard port,
1 serial port: COM1,
1 parallel port: ECP/EPP support,
6 default USB 2.0 ports,
1 RJ-45 port,
Audio Jack: Line In / Line Out / Microphone
®
®
6
BIOS:AMI legal BIOS,
Supports “Plug and Play”,
ACPI 1.1 compliance wake up events,
CPU frequency stepless control
(only for advanced users’ reference, see CAUTION 6)
OS:Microsoft® Windows® 98 SE / ME / 2000 / XP compliant
CAUTION!
1. About the setting of “Hyper Threading Technology”, plea se che ck page 26.
2. Please check the table below for the memory support frequency and its
corresponding CPU FSB frequency.
CPU FSB FrequencyMemory Support Frequency
800DDR266, DDR320
533DDR266, DDR333
400DDR266
* When you use an FSB800-CPU on this motherboard, it will run at
DDR320 if you adopt a DDR333 memory module.
3. While CPU overheat is detected, the system will automatically shutdown.
Before you resume the system, please check if the CPU fan on the
motherboard functions properly and unplug the power cord, then plug it
back again. To improve heat dissipation, remember to spray thermal
grease between the CPU a nd the heatsink when you in stall the PC syste m.
4. Do NOT use a 3.3V AGP card on the AGP slot of this motherboard!
It may cause permanent damage!
5. Power Management for USB 2.0 works fine under Microsoft
SP1 / 2000 SP4. It may not work properly under Microsoft
ME. Please refer to Microsoft
http://www.microsoft.com/whdc/hwdev/bus/USB/USB2support.mspx
6. Although this motherboard offers stepless control, it is not recommended
to perform over-clocking. Frequencies other than the recommended CPU
bus frequencies may cause the instability of the system or damage the
CPU.
®
official document at
*, DDR400
®
Windows® XP
®
Windows® 98/
7
1.3 Motherboard Layout
DDR1 (64/72bit, 184-pin module)
DDR2 (64/72bit, 184-pin module)
PS2_USB_PWR1
1
PGA478
ATX12V1
CPU_FAN1
CHA_FAN1
IDE2
ATXPWR1
Intel
848P
Chipset
Intel
ICH5
Chipset
CMOS
Battery
1
CLRCMOS0
SATA1
SATA2
FLOPPY1
GAME1
1
PANEL 1
HDLED RESET
PLED PWRBTN
1
SPEAKER1
1
USB67
1
USB4_5
1
IR1
1
1.5V_AGP1
PCI2
PCI1
2MB
BIOS
Super
I/O
AUDIO
CODEC
LAN
Chip
1
AUDIO1
JR1
JL1
P4 Combo
SATA
FSB800
Top:
LINE IN
Center:
LINEOUT
Bottom:
MIC IN
USB2.0
T: US B0
B:USB1
Top:
RJ-45
USB2.0
T: US B2
B:USB3
PARALLEL PORT
COM1
PS2
Mouse
PS2
Keyboard
11 11
11 11111111
11 11111
24.4cm (9.6in)
30.5cm
(
12.0 in)
IDE1
PCI3
PCI4
USB2.0
T: US B4
B:USB5
FSB1
1
AUX1
CD1
DDR400
AGP8X
USB2.0
5.1CH
Prescott 800
P4-478
P4-775
11 11111111
11 11111111 11 11111111
11 11111111
11 11111111
11 11111111
11 11111111
11 11111111
11 11111111
11 11111111
11 11111111
11 11111111
11 11111
J17
J14
J8J18
J5
J9 J6 J10
J21
J4
J13J12
J11
J1
J2
J3
1
2
54
3
6
7
9
10
11
12
13
14151617
18
192021
22
23
24
25
26
27
28
30
31
32
33
34
29
8
1PS2_USB_PWR1 Jumper17Secondary Serial A T A Connector (SAT A2)
2A TX 12V Connector (A TX12V1)18South Bridge Controller
3775-Pin CPU Socket19USB 2.0 Header (USB67, Blue)
4CPU Heatsink Retention Module20Floppy Connector (FLOPPY1)
P4 Combo is an ATX form factor (12.0-in x 9.6-in, 30.5 cm x 24.4 cm) motherboard.
Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it.
Pre-installation Precautions
Take note of the following precautions before you install motherboard
components or change any motherboard settings.
Before you install or remove any component, ensure that the
power 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.
1.Unplug the power cord from the wall socket before touching any
component.
2.To avoid damaging the motherboard components due to static
electricity, NEVER place your motherboard directly on the carpet or
the like. Also remember to use a grounded wrist strap or touch a
safety grounded object before you handle components.
3.Hold components by the edges and do not touch the ICs.
4.Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that comes with the component.
5.When placing screws into the screw holes to secure the motherboard
to the chassis, please do not over-tighten the screws! Doing so may
damage the motherboard.
10
2.1CPU Sockets
3
2
1
2
This motherboard is equipped with two types of CPU sockets. You may choose to
install either Intel 775-Pin CPU or Intel 478-Pin CPU into this motherboard. However, to
avoid instability and damage to the system, please do not install both of the m into this
motherboard.
Important: If you install a 775-Pin CPU into this motherboard, it is necessary to
adjust the setting of J1--J6, J8--J14, J17, J18, and J21 Jumpers by
shorting pin1 and pin2 of all these 16 sets of jumpers. These jumpers
are set to support 478-Pin CPU by shorting pin2 and pin3 by default.
Please refer to the figure below for these jumpers’ location on the
motherboard.
PGA478
Jumper
J17
11 11111
Jumper
J5
J9 J6 J10
J13J12
11 11111111
11 11111111
11 11111111
11 11111111
J17
J8J18
11 11111111
J21
J14
11 11111111
J14
J4
11 11111111
11 11111
11 11
11 11111111 11 11111111
J11
11 11111111
J2
Jumpers
11 11111111
J1
J3
11 11111111
11 11111111
NOTE:
J1, J2,J3
J4, J5,J6
J8, J9,J10
For clearer view of
J11,J12
J13, J18
Jumpers J1-J6, J8 - J13,
J21
J18, and J21, plea se refer to the magnification
on page 9.
short Pin2 and Pin3)(10 x 3-pin)(7 x 3-pin)(4 x 3-pin)
(Default)
775-Pin CPU
(all 16 Jumpers:
2
1
short Pin1 and Pin2)(10 x 3-pin)(7 x 3-pin)(4 x 3-pin)
2_3
(10 x 3-pin)
1_2
3
2
2
1
(10 x 3-pin)
11
2.2 CPU Installation
This motherboard is equipped with two types of CPU sockets. You may choose to
install either Intel 775-Pin CPU or Intel 478-Pin CPU into this motherboard. However, to
avoid instability and damage to the system, please do not install both of the m into this
motherboard.
I.
For the installation of Intel 775-Pin CPU,
please follow the steps below.
775-Pin Socket Overview
Before you insert the 775-Pin CPU into the socket, please check if the
CPU surface is unclean or if there is any bent pin on the socket. Do
not force to insert the CPU into the socket if above situation is found.
Otherwise, the CPU will be seriously damaged.
Step 1. Open the socket:
Step 1-1. Disengaging the lever by depressing
down and out on the hook to clear
retention tab.
Step 1-2. Rotate the load lever to fully open po-
sition at approximately 135 degrees.
Step 1-3. Rotate the load plate to fully open po-
sition at approximately 100 degrees.
12
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