This equipment has been tested and found to comply with the limits of 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. There is no guarantee
that interference will not occur in a particular installation.
The vendor makes no representations or warranties with respect to the
contents here and specially disclaims any implied warranties of merchantability
or fitness for any purpose. Further the vendor reserves the right to revise this
publication and to make changes to the contents here without obligation to
notify any party beforehand.
Duplication of this publication, in part or in whole, is not allowed without first
obtaining the vendor’s approval in writing.
The content of this user’s manual is subject to be changed without notice and
we will not be responsible for any mistakes found in this user’s manual. All the
brand and product names are trademarks of their respective companies.
Japanese ................................................................................................................ 38
CHAPTER 1: INTRODUCTION
P31-A7
1.1 B
EFORE YOU START
Thank you for choosing our product. Before you start installing the
motherboard, please make sure you follow the instructions below:
Prepare a dry and stable working environment with
sufficient lighting.
Always disconnect the computer from power outlet
before operation.
Before you take the motherboard out from anti-static
bag, ground yourself properly by touching any safely
grounded appliance, or use grounded wrist strap to
remove the static charge.
Avoid touching the components on motherboard or the
rear side of the board unless necessary. Hold the board
on the edge, do not try to bend or flex the board.
Do not leave any unfastened small parts inside the
case after installation.
Loose parts will cause short circuits which may
damage the equipment.
Keep the computer from dangerous area, such as heat
source, humid air and water.
1.2PACKAGE CHECKLIST
HDD Cable X 1 Serial ATA Cable X 1 Rear I/O Panel for ATX Case X 1 User’s Manual X 1 Fully Setup Driver CD X 1 FDD Cable X 1 (optional) USB 2.0 Cable X1 (optional) S/PDIF Cable X 1 (optional)
Note: The package contents may differ by area or your motherboard version.
Floppy connector x1 Each connector supports 2 Floppy drives
Printer Port Connector x1 Each connector supports 1 Printer port
IDE Conn ecto r x1 Each connector supports 2 IDE device
SPEC
Supports Hyper-Threading / Execute Disable Bit /
Enhanced Inte l SpeedStep® / Int e l Architecture-64 /
Extended Memory 64 Technology / Virtualization
Technology
En viro nment C ont rol in iti at ives ,
Hardware Monitor Controller
Fan Sp eed Contro ller
ITE's "S mart Guard ian" funct ion
Dual Channe l Mode DDR2 me mory mo dule
Supports DDR2 800/667
Supports DDR2 533 (with FSB 533/1066 C PU)
Register ed DIMM and ECC D IMM is not support ed
Ultra DMA 33 / 66 / 100 Bus Master Mode
supports PIO Mode 0~4
Data transfer rates up to 3.0 Gb/s.
SATA Version 2.0 spe c if ic at ion co mp liant
10 / 100 Mb/s / 1Gb/s auto negotiation (Gigabit
bandwidth is for RTL 8111C only)
Half / Full duplex capability
5.1 channels audio out
High Definition Audio
2
Back Panel
I/O
Board Size
OS Support
P31-A7
SPEC
SATA Connector x4 Each connect or supports 1 SATA devices
Front Panel Connector x1 Supports front panel facilities
Front Audio Connector x1 Supports front panel audio function
CD-in Connector x1 Supports CD audio-in function
S/PDIF out connector x1 Supports digital audio out function
CPU Fan header x1 CPU Fan power supply (with Smart Fan function)
System Fan header x1 Sys tem Fan Power supply
Clear CMOS header x1 Restore CMOS dat a to factory default
USB connector x2 Each connector s upports 2 fro nt panel USB ports
Power Connector (24pin) x1 Connects to Power supply
Power Connector (4pin) x1 Connects to Power supply
PS/2 Keyboard x1
PS/2 Mous e x1
Serial Port x1
LAN port x1
USB Port x4
Audio Jack x3
190 (W) x 305 (L) mm
Windows 2000 / XP / VISTA
Connects to PS/2 Keyboard
Connects to PS/2 Mouse
Provide RS-232 Serial connection
Connect to RJ-45 ethernet cab le
Connect t o USB devices
Provide Audio-In/Out and microphone connection
Biostar Reserves the right to add or remove support for
any OS with or without notice
1.4REAR PANEL CONNECTORS
PS/2
Mouse
PS/2
COM1
Keyboard
Since the audio chip supports High Definition Audio Specification, the function of each audio
jack can be defined by software. The input / output function of each audio jack listed above
represents the default setting. However, when connecting external microphone to the audio
port, please use the Line In (blue) and Mic In (Pink) audio jack.
LAN
Line In/
Surroun d
Line Ou t
Mic In 1/
Bass/ Center
USBX2USBX2
3
Motherboard Manual
1.5MOTHERBOARD LAYOUT
JKBMS1
JCOM1
JUSBV1
JUSB1
JRJ45 USB1
JAUDI O2
JAUDIOF1
JATXPWR1
JCDIN1
LAN
JATXPWR2
JSPDIF_OU T1
LGA775
CPU1
Intel
P31/G31
PEX16_1
JCFAN1
DDR2_A1
DDR2_B1
4
Super
CODEC
Note: represents the 1■
I/O
JPRNT1
PEX1_1
PEX1_2
BIOS
FDD1
PCI1
PCI2
PCI3
st
pin.
BAT1
JUSBV2
JCM OS1
JUSB3
Intel
ICH7
JUSB4
SATA1 SATA3
SATA2SATA4
ID E1
JPANEL1
JSFAN 1
CHAPTER 2: HARDWARE INSTALLATION
P31-A7
2.1 I
NSTALLING CENTRAL PROCESSING UNIT (CPU)
Special Notice:
Remove Pin Cap before installation, and make good preservation
for future use. When the CPU is removed, cover the Pin Cap on the
empty socket to ensure pin legs won’t be damaged.
Pin Cap
Step 1: Pull the socket locking lever out from the socket and then raise
the lever up to a 90-degree angle.
5
Motherboard Manual
Step 2: Look for the triangular cut edge on socket, and the golden dot on
CPU should point forwards this triangular cut edge. The CPU will
fit only in the correct orientation.
Step 2-1:
Step 2-2:
Step 3: Hold the CPU down firmly, and then lower the lever to locked
position to complete the installation.
Step 4: Put the CPU Fan and heatsink assembly on the CPU and buckle it
on the retention frame. Connect the CPU FAN power cable into
the JCFAN1. This completes the installation.
6
2.2 FANHEADERS
These fan headers support cooling-fans built in the computer. The fan
cable and connector may be different according to the fan manufact urer.
Connect the fan cable to the connector while matching the black wire to
pin#1.
JCFAN1: CPU Fan Header
4
1
JSFAN1: System Fan Header
JSFAN1
3
Pin
Assignment
1 Ground
2 +12V
3
FAN RPM r at e
sense
4 Smart Fan
Control
Pin
Assignment
1 Ground
2 +12V
3 FAN RPM rate
sense
P31-A7
1
Note:
The JSFAN1 support 3-pin head connector. When connecting with wires onto connectors,
please note that the red wire is the positive and should be connected to pin#2, and the
black wire is Ground a nd should be co nnected to GND.
7
Motherboard Manual
2.3 INSTALLING SYSTEM MEMORY
A. Memory Modules
DDR2 _A1
DDR2 _B1
1. Unlock a DIMM slot by pressing the retaining clips outward. Align a
DIMM on the slot such that the notch on the DIMM matches the
break on the Slot.
2. Insert the DIMM vertically and firmly into the slot until the retaining
chip snap back in place and the DIMM is properly seated.
8
B. Memory Capacity
P31-A7
DIMM Socket
Location
DDR2_A1 256MB/512MB/1GB/2GB
DDR2_B1 256MB/512MB/1GB/2GB
DDR Module
Total Mem ory
Size
Max is 4B.
C. Dual Channel Memory installation
To trigger the Dual Channel function of the motherboard, the memory module
must meet the following requirements:
Install memory module of the same density in pairs, shown in the following
table.
Dual Channel Status
Disabled O X
Disabled X O
Enabled O O
DDR2_A1
DDR2_B1
(O means memory installed, X means memory not installed.)
The DRAM bus width of the memory module must be the same (x8 or
x16)
D. FSB Supporting Table
According to the FSB frequency of the installed CPU, the motherboard could
support DDR2 533/667/800 modules. Please refer to the table below to find
out the proper RAM module that fits the FSB of the installed CPU.
FSB of CPU
DDR2 Module
DDR2 533 O X O X
DDR2 667 O O O O
DDR2 800 O O O O
(O means supported, X means not supported.)
FSB 533 FSB 800 FSB 1066 FSB1333
9
Motherboard Manual
2.4 CONNECTORS AND SLOTS
FDD1: Floppy Disk Connector
The motherboard provides a standard floppy disk connector that supports 360K,
720K, 1.2M, 1.44M and 2.88M floppy disk types. This connector supports the
provided floppy drive ribbon cables.
IDE1: Hard Disk Connector
The motherboard has a 32-bit Enhanced PCI IDE Controller that provides PIO
Mode 0~4, Bus Master, and Ultra DMA 33/66/100 functionality.
The IDE connector can connect a master and a slave drive, so you can connect
up to two hard disk drives.
2
34
331
10
240
1
39
PEX16_1: PCI-Express x16 Slot
- PCI-Express 1.0a compliant.
- Maximum theoretical realized bandwidth of 4GB/s simultaneously per
direction, for an aggregate of 8GB/s totally.
PEX1_1/PEX1_2: PCI-Express x1 Slots
- PCI-Express 1.0a compliant.
- Maximum theoretical realized bandwidth of 250MB/s simultaneously per
direction, for an aggregate of 500MB/s totally.
- PCI-Express supports a raw bit-rate of 2.5GB/s on the data pins.
- 2X bandwidth over the traditional PCI architecture.
This motherboard is equipped with 3 standard PCI slots. PCI stands for
Peripheral Component Interconnect, and it is a bus standard for expansion
cards. This PCI slot is designated as 32 bits.
PCI1
PCI2
PCI3
11
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