Abit IS-85 User manual

Introduction
Hardware Setup BIOS Setup Driver & Utility Appendix
IS-85
Motherboard
Intel Pentium 4/Celeron/Celeron D
Socket 775
Installation Instruction

Copyright and Warranty Notice
The information in this document is subject to change without notice and does not represent a
commitment on part of the vendor, who assumes no liability or responsibility for any errors that may
appear in this manual.
No warranty or representation, either expressed or implied, is made with respect to the quality,
accuracy or fitness for any particular part of this document. In no event shall the manufacturer be
liable for direct, indirect, special, incidental or consequential damages arising from any defect or
error in this manual or product.
Product names appearing in this manual are for identification purpose only and trademarks and
product names or brand names appearing in this document are the property of their respective
owners.
This document contains materials protected under International Copyright Laws. All rights reserved.
No part of this manual may be reproduced, transmitted or transcribed without the expressed written
permission of the manufacturer and authors of this manual.
If you do not properly set the motherboard settings, causing the motherboard to malfunction or fail,
we cannot guarantee any responsibility.
ii IS-85

Introduction
Contents
1. Introduction..................................................................... 1-1
Hardware Setup BIOS Setup Driver & Utility Appendix
1.1 Features & Specifications .............................................................1-1
1.2 Motherboard Layout.....................................................................1-3
2. Hardware Setup ............................................................... 2-1
2.1 Choosing a Computer Chassis.......................................................2-1
2.2 Installing Motherboard .................................................................2-1
2.3 Checking Jumper Settings ............................................................2-2
2.3.1 CMOS Memory Clearing Header and Backup Battery ..............2-3
2.4 Connecting Chassis Components...................................................2-5
2.4.1 ATX Power Connectors ........................................................2-5
2.4.2 FAN Power Connectors ........................................................2-5
2.4.3 Front Panel Switches & Indicators Headers............................2-6
2.5 Installing Hardware......................................................................2-7
2.5.1 CPU Socket 775 ..................................................................2-7
2.5.2 DDR Memory Slots ............................................................2-10
2.5.3 Floppy and IDE Disk Drive Connectors ................................ 2-11
2.5.4 Serial ATA Connectors .......................................................2-12
2.5.5 Accelerated Graphics Port Slot............................................2-13
2.5.6 PCI Add-on Slots ...............................................................2-13
2.6 Connecting Optional Devices ......................................................2-14
2.6.1 Additional USB 2.0 Port Headers.........................................2-14
2.6.2 Internal Audio Connector ................................................... 2-14
2.6.3 Front Panel Audio Connection Header ................................. 2-15
2.7 Connecting I/O Devices.............................................................. 2-16
IS-85 iii

3. BIOS Setup....................................................................... 3-1
4. Driver & Utility ................................................................. 4-1
5. Appendix .......................................................................... 5-1
5.1 Troubleshooting (How to Get Technical Support?)..........................5-1
5.1.1 Q & A.................................................................................5-1
5.1.2 Technical Support Form ......................................................5-3
iv IS-85

Introduction
1. Introduction
1.1 Features & Specifications
CPU
• LGA775 Socket for Intel Pentium 4/Celeron/Celeron D Processor with 800/533MHz
FSB
• Supports Intel Hyper-Threading Technology
Chipset
• Northbridge: Intel 865G
• Southbridge: Intel ICH5
Memory
• 2X 184-pin DIMM slots support 2GB maximum memory capacity
• Supports Dual Channel DDR 400 Un-buffered Non-ECC memory
Graphics
• Integrated Intel Extreme Graphics 2
Serial ATA
• 2x SATA 1.5Gb/s
LAN
• Onboard 10/100Mb PCI controller
Audio
• Onboard 5.1-Channel Audio CODEC
Expansion Slots
• 1x AGP 8X slot
• 3x PCI slots
Internal I/O Connectors
• 1x Floppy port
• 2x UDMA 100/66/33 IDE connectors (each supports 2x IDE devices)
• 2x SATA 1.5Gb/s connectors
• 2x USB 2.0 headers (each supports 2x USB 2.0 ports)
• 1x FP-Audio header
• 1x CD-IN header
Rear Panel I/O
• 1x PS/2 mouse port
• 1x PS/2 keyboard port
• 1x Serial port
IS-85 1-1

• 1x Parallel port
• 1x VGA port
• 4x USB 2.0 ports
• 1x RJ-45 LAN port
• 1x Audio connector (Line-in, Line-out, MIC-in)
Miscellaneous
• mATX form factor (244mm x 244mm)
※ Specifications and information contained herein are subject to change without
notice.
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Introduction
1.2 Motherboard Layout
IS-85 1-3

1-4 IS-85

Hardware Setup
IS-85 2-1
2. Hardware Setup
In this chapter we will elaborate all the information you need upon installing this motherboard
to your computer system.
※ Always power off the computer and unplug the AC power cord before adding or
removing any peripheral or component. Failing to do so may cause severe
damage to your motherboard and/or peripherals. Plug in the AC power cord only
after you have carefully checked everything.
2.1 Choosing a Computer Chassis
• This motherboard carries a mATX form factor of 244 x 244 mm. Choose a chassis big
enough to install this motherboard.
• As some features for this motherboard are implemented by cabling connectors on the
motherboard to indicators and switches or buttons on the chassis, make sure your chassis
supports all the features required.
• If there is possibility of adopting some more hard drives, make sure your chassis has
sufficient power and space for them.
• Most chassis have alternatives for I/O shield located at the rear panel. Make sure the I/O
shield of the chassis matches the I/O port configuration of this motherboard. You can find
an I/O shield specifically designed for this motherboard in its package.
2.2 Installing Motherboard
Most computer chassis have a base with
many mounting holes to allow the
motherboard to be securely attached, and at
the same time, prevent the system from
short circuits. There are two ways to attach
the motherboard to the chassis base:
1. use studs, or
2. use spacers
In principle, the best way to attach the board
is to use studs. Only if you are unable to do
this should you attach the board with spacers.
Line up the holes on the board with the mounting holes on the chassis. If the holes line up and
there are screw holes, you can attach the board with studs. If the holes line up and there are
only slots, you can only attach with spacers. Take the tip of the spacers and insert them into
the slots. After doing this to all the slots, you can slide the board into position aligned with slots.
After the board has been positioned, check to make sure everything is OK before putting the
chassis back on.

To install this motherboard:
1. Locate all the screw holes on
the motherboard and the
chassis base.
2. Place all the studs or spacers
needed on the chassis base
and have them tightened.
3. Face the motherboard’s I/O
ports toward the chassis’s rear
panel.
4. Line up all the motherboard’s
screw holes with those studs o
r
spacers on the chassis.
5. Install the motherboard with
screws and have them
tightened.
Face the chassis’s rear panel.
※ To prevent shorting the PCB circuit, please REMOVE the metal studs or spacers if
they are already fastened on the chassis base and are without mounting-holes
on the motherboard to align with.
2.3 Checking Jumper Settings
For a 2-pin jumper, plug the jumper cap on both pins will make it CLOSE (SHORT). Remove the
jumper cap, or plug it on either pin (reserved for future use) will leave it at OPEN position.
SHORT OPEN OPEN
For 3-pin jumper, pin 1~2 or pin 2~3 can be shorted by plugging the jumper cap in.
Pin 1~2 SHORT Pin 2~3 SHORT
2-2 IS-85

Hardware Setup
IS-85 2-3
2.3.1 CMOS Memory Clearing Header and Backup Battery
The time to clear the CMOS memory occurs when (a) the CMOS data becomes corrupted, (b)
you forgot the supervisor or user password preset in the BIOS menu, (c) you are unable to
boot-up the system because the CPU ratio/clock was incorrectly set in the BIOS menu.
This header uses a jumper cap to clear the CMOS memory and have it reconfigured to the
default values stored in the ROM BIOS.
• Pins 1 and 2 shorted (default): Normal operation.
• Pins 2 and 3 shorted: Clear CMOS memory.
To clear the CMOS memory and load the default values:
1. Power off the system.
2. Set pin 2 and pin 3 shorted by the jumper cap. Wait for a few seconds. Set the jumper cap
back to its default settings --- pin 1 and pin 2 shorted.
3. Power on the system.
4. For incorrect CPU ratio/clock settings in the BIOS, press <Del> key to enter the BIOS setup
menu right after powering on system.
5. Set the CPU operating speed back to its default or an appropriate value.
6. Save and exit the BIOS setup menu.

CMOS Backup Battery:
An onboard battery saves the CMOS memory to keep the BIOS information stays on even after
disconnected your system with power source. Nevertheless, this backup battery exhausts after
some five years. Once the error message like “CMOS BATTERY HAS FAILED” or “CMOS
checksum error” displays on monitor, this backup battery is no longer functional and has to
be renewed.
To renew the backup battery:
1. Power off the system and disconnect with AC power source.
2. Remove the exhausted battery.
3. Insert a new CR2032 or equivalent battery. Pay attention to its polarity. The “+” side is its
positive polarity.
4. Connect AC power source and power on the system.
5. Enter the BIOS setup menu. Reconfigure the setup parameters if necessary.
CAUTION:
※ Danger of explosion may arise if battery is incorrectly renewed.
※ Renew only with the same or equivalent type recommended by the battery
manufacturer.
※ Dispose of used batteries according to the battery manufacturer’s instructions.
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Hardware Setup
IS-85 2-5
2.4 Connecting Chassis Components
2.4.1 ATX Power Connectors
These connectors provide the connection from an ATX power supply. As the plugs from the
power supply fit in only one orientation, find the correct one and push firmly down into these
connectors.
2.4.2 FAN Power Connectors
These connectors each provide power to the cooling fans installed in your system.
• CPU_FAN: CPU Fan Power Connector
• SYS_FAN: System Fan Power Connector
• PWR_FAN: Auxiliary Fan Power Connector
※ These fan connectors are not jumpers. DO NOT place jumper caps on these
connectors.

2.4.3 Front Panel Switches & Indicators Headers
This header is used for connecting switches and LED indicators on the chassis front panel.
Watch the power LED pin position and orientation. The mark “+” align to the pin in the figure
below stands for positive polarity for the LED connection. Please pay attention to connect these
headers. A wrong orientation will only cause the LED not lighting, but a wrong connection of
the switches could cause system malfunction.
Pin Definition Pin Definition
1 HD LED + 2 Message LED +
3 HD LED - 4 Message LED -
5 RESET 6 Power Switch
7 RESET 8 Power Switch
9 Reserved
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Hardware Setup
IS-85 2-7
2.5 Installing Hardware
※ DO NOT scratch the motherboard when installing hardware. An accidentally
scratch of a tiny surface-mount component may seriously damage the
motherboard.
※ In order to protect the contact pins, please pay attention to these notices:
1. A maximum 20 cycles of CPU installation is recommended.
2. Never touch the contact pins with fingers or any object.
3. Always put on the cap when the CPU is not in use
2.5.1 CPU Socket 775
1. Place the board so as to let the
lever-hook of the socket is on your left
side. Use your left thumb and forefinger
to hold the lever hook, pull it away from
the retention tab. Rotate the lever to
fully open position.
2. Use your right thumb on the
bottom-right side of the load plate and
lift it up to fully open position.
3. Use your right thumb and forefinger to
grasp the CPU package. Be sure to
grasp on the edge of the substrate, and
face the Pin-1 indicator toward the
bottom-left side. Aim at the socket and
place the CPU package vertical down
into the socket.

4. Visually inspect if the CPU is seated well
into the socket. The alignment key must
be located in the notch of package.
5. Use your left hand to hold the load
plate, and use your right thumb to peel
the cap off.
※The cap plays an important role in
protecting contact pins. In order to
prevent bent pin, PUT ON the cap
after operation or testing.
6. Lower the plate onto the CPU package.
Engage the load lever while gently
pressing down the load plate.
7. Secure the lever with the hook under
retention tab.
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Hardware Setup
IS-85 2-9
8. Place the heatsink and fan assembly
onto the socket. Align the four fasteners
toward the four mounting holes on the
motherboard.
9. Press each of the four fasteners down
into the mounting holes. Rotate the
fastener clock-wise to lock the heatsink
and fan assembly into position.
10. Attach the four-pin power plug from the
heatsink and fan assembly to the CPU
FAN connector.
※ The installation procedures vary with different types of CPU fan-and-heatsink
assembly. The one shown here is served for demo only. For detailed information
on how to install the one you bought, refer to its installation guidelines.
※ A higher fan speed will be helpful for better airflow and heat-dissipation.
Nevertheless, stay alert to touch any heatsink since the high temperature
generated by the working system is still possible.

2.5.2 DDR Memory Slots
This motherboard provides 2x 184-pin un-buffered DDR SDRAM slots for the installation of dual
channel DDR400 memory modules maximum up to 2GB capacity.
※ To reach the optimum performance in dual-channel configurations, install DDR
DIMM pairs at the same density, DRAM technology and bus width for both slots.
To install system memory:
1. Power off the computer and unplug the
AC power cord before installing or
removing memory modules.
2. Locate the DIMM slot on the board.
3. Hold two edges of the DIMM module
carefully, keep away of touching its
connectors.
4. Align the notch key on the module with
the rib on the slot.
5. Firmly press the module into the slots until the ejector tabs at both sides of the slot
automatically snaps into the mounting notch. Do not force the DIMM module in with extra
force as the DIMM module only fit in one direction.
6. To remove the DIMM modules, push the two ejector tabs on the slot outward
simultaneously, and then pull out the DIMM module.
※ Static electricity can damage the electronic components of the computer or
optional boards. Before starting these procedures, ensure that you are
discharged of static electricity by touching a grounded metal object briefly.
2-10 IS-85

Hardware Setup
IS-85 2-11
2.5.3 Floppy and IDE Disk Drive Connectors
The FDD connector connects up to two floppy drives with a 34-wire, 2-connector floppy cable.
Connect the single end at the longer length of ribbon cable to the FDD on the board, the two
connectors on the other end to the floppy disk drives connector. Generally you need only one
floppy disk drive in your system.
※ The red line on the ribbon cable must be aligned with pin-1 on both the FDD port
and the floppy connector.
Each of the IDE port connects up to two IDE drives
at Ultra ATA/100 mode by one 40-pin, 80-conductor,
and 3-connector Ultra ATA/66 ribbon cables.
Connect the single end (blue connector) at the
longer length of ribbon cable to the IDE port of this
board, the other two ends (gray and black connector)
at the shorter length of the ribbon cable to the
connectors of your hard drives.
※ Make sure to configure the “Master” and “Slave” relation before connecting two
drives by one single ribbon cable. The red line on the ribbon cable must be
aligned with pin-1 on both the IDE port and the hard-drive connector.

2.5.4 Serial ATA Connectors
Each SATA connector serves as one single channel to connect one SATA device by a thin SATA
cable.
To connect SATA device:
1.
A
ttach either end of the si
g
nal cable to
the SATA connector on motherboard.
Attach the other end to SATA device.
2.
A
ttach the SATA power cable to the
SATA device and connect the other end
from the power supply.
2-12 IS-85