IMB-8550 Micro-ATX Pentium M Embedded
Motherboard User Manual
Copyright Notice
The information in this document is subject to change without prior notice in order to improve
reliability, design and function and does not represent a commitment on the part of the manufacturer.
In no event will the manufacturer be liable for direct, indirect, special, incidental, or con se quential
damages arising out of the use or inability to use the product or documentation, even if advised of
the possibility of such damages.
This document contains propriet ary information protected by copyright. All rights are reserved. No
part of this manual may be reproduced by any mechanical, electronic, or other means in any form
without prior written permission of the manufacturer.
Trademarks
IBM PC is a registered trademark of International Business Machines Corporation. INTEL is a
registered trademark of INTEL Corporat ion. AMI is registered trademarks of American Megatrends
Inc. Other product names mentioned herein are used for identification purposes only and may be
trademarks and/or registered trademarks of their respective owners.
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IMB-8550
Table of Contents
Revision History2 ··························································································································
Motherboard User Manual2
Copyright Notice2
Trademarks2
Table of Contents3
List of Tables7
List of Figures8
CPU Installation3-11
Cooling Kit (CF-518) Installation3-14
DIMM Installation3-17
Connections to the Peripherals3-17
IDE Disk Drive and CDROM Connector (IDE1 & IDE2)3-18
Floppy Drive Connector (FDD1)3-18
Compact Flash Disk3-18
Parallel Port Connector (LPT1)3-19
Audio Interface3-19
COM Port Connectors (COM1 to COM6)3-19
LCD Panel Connection (VGA1 and CN13)3-19
PCI Bus Interface3-20 ··························································································································
Ethernet Connection (LAN Port on CN2)3-20
USB Connection (USB1 and USB Ports on CN2)3-20
North Bridge Configuration4-33
South Bridge Chipset Configuration4-34
Spread Spectrum Configuration4-35
Power Management - APM Configuration4-36
Power Button Mode [On/Off]4-37
USB Port .............................................................................................36
Safety Notice
Electrical shock hazards might occur while proceeding with the installation, repair and
maintenance of this product. Therefore, the following precaution measures should be carefully
observed:
1. All sorts of operations on this product must be carried out by certified technicians.
2. The chassis into which the CPU board and its associated backplane are installed should
provide stable and sufficient power supply, and be properly grounded.
3. Power off the motherboard and unplug its power cord before handling.
4. Before connecting any signal cables, make sure that all power cords are disconnected.
5. Consult qualified technicians before adding an adapter or extension cord.
6. When handling the motherboard, avoid touching any metal leads or connectors.
7. Set your power supply to the correct voltage range.
8. Please verify that the power supply is switched off before unplugging the power supply
connector from the motherboard.
9. Contact your local dealer if any item you received in the package appears to have been
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IMB-8550
damaged.
ESD Precautions
Observe all conventional anti-ESD methods while handling the CPU board. The use of a
grounded wrist strap and an anti-static work pad i s recommended. Avoid dust and debris or other
static-accumulating materials in your work area.
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IMB-8550
Conventions Used in This Manual
Naming
From this point on and throughout the rest of this manual, the IMB-8550 is referred to as
simply the “motherboard” or the “board.”
WARNING!
Warnings appear where overlooked details may cause damage to the equipment or result
in personal injury. Warnings should be taken seriously. Warnings are easy to recognize.
The word “warning” is written as “WARNING,” both capitalized and bold and is followed by
text in italics. The italicized text is the warning message.
CAUTION!
Cautionary messages should also be heeded to help you reduce the chance of losin g data
or damaging the system. Cautions are easy to recognize. The word “caution” is written as
“CAUTION,” both capitalized and bold and is followed by text in italics. The italicized text is
the cautionary message.
NOTE:
These messages inform the reader of essential but non-critical information. These
messages should be read carefully as any directions or instructions contained therein can
help you avoid making mistakes. Notes are easy to recognize. The word “note” is written as
“NOTE,” both capitalized and bold and is followed by text in italics. The italicized text is the
cautionary message.
Lists
Bulleted Lists: Bulleted lists are statements of non-sequential facts that can be read in any
order. Each statement is preceded by a round black dot “•.”
Numbered Lists: Numbered lists describe sequential steps you sh ould follow in order.
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Software and Firmware Updates
Please contact your system vendor or visit IEI website (www.iei.com.tw) for the latest
software or firmware updates. NOTE that the BIOS version and associated drivers installed
on your system should provide the complete functionality listed in the specification
sheet/user’s manual. We provide special revisions for various application p urposes.
Therefore, DO NOT upgrade your BIOS unless you fully understand what a firmware
revision will do.
Problems that occur during the updating process may cause unrecoverable errors and
system down time. Always consult technical personnel before proceeding with any BIOS
upgrade.
IMB-8550
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Chapter
1
Introduction
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Product Overview
The IMB-8550 Embedded Motherboard
The IMB-8550 is a highly-integrated embedded system board designed to support Pentium® M or
Celeron® M processors, which was originally design for mobile PC architecture boosted by a
dedicated stack manager , micro-ops fusion technol ogy and Enhanced Intel SpeedS tep tech nology.
Combined with Intel® 855GME chipset and the ICH4 controller hub, the IMB-8550 delivers high
performance through perfect integration of the latest technologies. The emb edded board supports
Pentium M CPUs with the speed up to 2GHz.
The motherboard comes with the connectivity to a variety of external interfaces including six (6)
USB 2.0 ports, six (6) COM ports, two (2) SATA ports, one (1) CFII socket for compact size
bootable device, and dual displays through the VGA/LVDS interface.
As a continuance to IEI’s well-acclaimed line of industrial motherboards, the IMB distinguishes
itself from users’ produ cts in the following aspects:
1. Tested and proved reliable through tests conducted in harsh
environments with temperatures ranging from 0 to 60°C.
2. High-quality components to withstand punishing working conditions.
3. RoHS compliance.
4. Long-term support to protect your investment.
5. Customization service.
6. Flexible interface configuration to peripheral devices for continuous
monitoring, wireless and simultaneous communications with storage
or terminal devices.
The IMB-8550 provides the following for the connections to a wide variety of peripheral devices:
One (1) GbE Ethernet port
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1-2
Six (6) USB 2.0 ports
Six (6) COM ports
Two (2) SATA ports
Two (2) IDE po rts
One (1) CFII socket
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One (1) 30-pin LVDS LCD panel connector
Intel Graphics embedded in the 855GME chipset through one (1) 1 5-pin VGA
connector.
Various interfaces for Infrared, LPT, floppy, PS/2 keyboard/mouse, Digital I/O, etc.
The IMB-8550 is built in accordance with Micro-ATX form factors. With interface connectors
carefully aligned to the edges of PCB, airflow travel clear of obstructions through board surface
and thus the chance of overheating is reduced. Carefully tuned using the IR Thermograph
technology, reliability of operation is guaranteed.
The IMB-8550 features a significant improvement of CPU processing power and interface
expandability. The motherboard also takes advantages from a sophisticated Windows CE OS
system which features stable operation, real-time responsiveness, and co st-saving appliances.
As the result, the integration of the board is ideal for GPS, Automation devices, transaction
terminals, MMI, etc.
OSes tested and proved compliant include: DOS 6.22, Windows 2000, Windows XP, Windows CE,
Red Hat 9.0, and SuSe 9.0. For a more updated list of supported OSes, please check on IEI
website or contact our technical support.
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IMB-8550 Board Overview
Figure 1-1 IMB-8550 Board Overview
NOTE:
There are no configuration jumpers or connectors on the soldering side.
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Technical Specifications
IMB-8550
CPU (mPGA479M)
Chipset
Memory
PCI Bus Interface
Supports Intel
®
Pentium® M Prescott/Celeron M socket 479
CPUs.
Supports FSB (Front Side Bus) up to 400MHz.
L1/L2 cache varies with CPU processor.
Northbridge: Intel
Southbridge: Intel
®
855GME Chipset
®
ICH4
Supports 333/266/200 MHz unbuffered DDR with a maximum of
two double-sided DIMMs for a total of 2GB of system memory
128Mbit, 256Mbit, and 512Mbit DDR device technology support
Supports PCI Revision 2.2 Specification at 33 MHz
133 MB/sec maximum throughput
Supports up to six master devices on PCI (3 implemented)
One PCI REQ/GNT pair can be given higher arbitration priority
(intended for external 1394 host controller)
Support for 44-bit addressing on PCI using DAC protocol
Up to 4 (four) PCI Enhanced IDE hard drives or CD-ROMs. The
IDE interface
Graphics
Ultra DMA 100 IDE can handle data transfer up to 100MB/s.
Compatible with existing ATA IDE specifications with its best
advantages, so there is no need to do any changes with users’
current accessories.
Supports Ultra ATA /100 / 66 / 33, BMIDE and PIO modes
Intel’s Extreme Graphics 2 Technology32-bit 3D core at 133MHz
APG 4X support
Dual independent pipe display support: an embedded VGA and a
LVDS interface
Concurrent: different images and native display timings on each
display device.
Simultaneous: same images and native display timings on each
display device.
Dedicated Local Flat Panel (LFP) LVDS interface
Internal Graphics Features
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Core frequency:
Display core frequency of 133MHz
Render core frequency of 133MHz
Compliant with DVI Specification 1.0
Floppy disk drive
interface
Serial ports
Peripherals
Supports up to two floppy disk drives, 5.25”(360KB and 1.2MB)
and/or 3.5” (720KB, 1.44MB, and 2.88MB)
6 (six) RS-232 ports with 16C550 UART (or compatibl e) with
16-byte FIFO buffer. Support up to 115.2Kbps. Ports can be
individually configured to COM1 to COM6 respectively.
1 (one) parallel port supporting Normal/EPP/ECP mode
- Provides one 26 Pin Printer port header.
- Supports EPP and ECP.
1 (one) VGA port.
1 (one) LVDS via 20-pin connector,
6 (six) USB 2.0/1.1 ports (bracket x 4, pin header (2x5) x 2 via
adapter cable)
6 (six) RS-232 COM ports (one D-SUB on the real panel)
2 (two) PS/2 keyboard / Mouse port.
2 (two) SATA -150 ports.
1 (one) IrDA head er supports IrDAs version 1.0 SIR protocol with
maximum baud rate up to 115.2K bps.
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1 (one) Digital IO header: provides one 10Pin header for four GPI
AC-Link for Audio and Telephony Codecs
Provides an auxiliary 10-pin Audio header
AC ’97 implementation delivers 20-bit audio for enhanced sound
quality and full surround sound capability
Line IN, Line Out, MIC IN in phone jacks and CD IN on PCB header
System Monitoring
The IMB-8550 embedded board is capable of self-monitoring various aspects of its operatin g
status including:
CPU, chipset, and battery voltage, +3.3V, +5V, and +12V
RPM of cooling fans
CPU and board temperatures (by the corresponding embedded sensors)
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Package Contents
1 x IMB-8550 motherboard
1 x SATA power cable
2 x SATA cables
1 x Mini jumper pack
3 x RS-232 cable (2 x 2 kit; 1 x 1 kit)
2 x ATA-66/100 flat cable
1 x rear panel I/O bracket
1 x Driver and Utility CD
1 x QIG (Quick Installation Guide)
Optional Accessory Items
IMB-8550
CF-518 CPU Cooler kit
32200-000017-RS FDD cable
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Chapter
2
Functional Description
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This chapter provides a functional description of the IMB-8550 motherboard designed for the
integration with communications, transaction terminals, interactive clients, and industrial control
applications. This chapter includes information about main processors, interface connectors,
implementation options, and signal description.
2.1 CPU, Memory, and Intel Chipsets
CPU
The IMB-8550 comes with an mPGA479M socket for Intel Pentium® M or Celeron® M processors
running at the speed up to 2.0GHz. The CPU applied requires active cooling by a heatsink and
cooler. A cooling kit by IEI is available as a sep arate ly purcha sed item. Please refer to Chapter 3 for details on the cooling kit.
Shown below are some of the key features of the Intel processors (taking Pentium M as an
example):
High performance and low power consumption.
Enhanced Intel SpeedStep technology for low power consumption.
Large L1/L2 caches; up to 2MB L2 for faster I/O turnarounds.
Advanced branch prediction for faster program execution.
Micro-op fusion for excellent load and store data manipulation.
Intel 855GME chipset, on-chip graphics, and dual display.
The table below provides information on the Intel processors supported on the IMB-8550
motherboard.
2-1 Supported CPUs
Table
Mfg. Model Capacity/Speed L2 Description
Intel
760 Pentium M 2.0GHz 2MB FSB: 533MHz
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Intel
Intel
Intel
745 Pentium M 1.8GHz 2MB FSB: 400MHz
738 Pentium M 1.4GHz 2MB FSB: 400MHz
370 Celeron M 1.5GHz 1MB FSB: 400MHz
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Memory
The IMB-8550 provides two (2) DDR SDRAM sockets without ECC su pport for building a large
buffer size of up to 2GB (1GB x2). The memory is aut omatically identified. The memory speed
can range from DDR-200, DDR-266, to DDR-333.
Intel 855GME Chipset
The Intel 855GME chipset is comprised of the following devices:
The north bridge 855GME controller hub provides processor and memory bus interfaces with
an embedded graphics controller. The chipset provides high-bandwidth interfaces and
integrated graphics support utilizing Intel Extreme Graphics 2 technology. The chipset also
features a dramatic improvement on peripheral device connection offering three (3) USB host
controllers with 480 Mbps of bandwidth, and thus enabling support for up to six (6) USB 2.0
ports. The chipset is especially ideal for embedded systems in terms of its support for
multiple programmable configurations and Dual independent displays.
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Block Diagram
Figure 2-1 IMB-8550 System Block Diagram
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A
Important Features
The key functionalities provided by the chipset and IEI’s implementations can be summarized as
follows:
2-2 Important Features
Table
Intel long term support product
Support Intel Pentium M and Celeron M processors with the Front System
Bus speed at up to 400MHz (e.g., Pentium M 750)
Interface: Micro-
TX form factors with added external interfaces, AGP 4X
graphics and PCI expansion slots
Low power consumption and high performance
Low V oltage Display Signaling (LVDS) and standard VGA provide a
dual-display solution for a wide variety of applications; e.g., kiosks as
customer interaction stations or medical equipment showi ng diagnostics
and patient’s records simultaneously.
High reliability operating within the -10-to-70°C wide temperature range
System Memory: DDR 200/266/333 modules, 2GB memory
addressability.
Interface connectors aligned to the edges of PCB for ease of connectivity
and the optimized airflow through board surface.
Flexible and increased number of interfaces.
Benefits:
Speedy communications among terminals through GbE
Ethernet
Capacity to communicate with diverse storage devices
Efficiency in data processing and multi-stream MPEG2
demonstration
Freedom of wireless communication
Six (6) PCI masters (3 PCI slots implemented) provides generous system
expandability
Environmental friendly with RoHS compliance
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Hardware Monitor: Built-in to monitor CPU Vcore, VCC, CPU/System fan
speed, and temperature detection functionalities.
Compact Flash type II connectivity for applications without external
storage.
Independent DMA audio engines via Realtek ALC655.
Ethernet: Realtek 8110S Gigabit Ethernet.
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2.2 External Interfaces
For the locations of external interfaces, please refer to the diagram below:
IMB-8550
Figure 2-2 External Interface Locations
NOTE:
The configuration options through jumper settings will be discussed in
Chapter 3: Installation
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List of All Interface Connectors
Table 2-3 Interface Connectors
Connector No. Type
VGA
COM
USB
KB/MS (PS/2)
LPT
FAN1
FAN2
AUX1
CD_IN
DIO1
IDE
FDD
IrDA
J1
1 15-pin VGA
6 1 in DB-9, others in 2x5 pin headers; (RS-232/RS-422/RS-485
configurable through jumpers)
6 4 on the rear panel, 2 via adapter cable
2 PS/2 Keyboard/Mouse connector
1 25-pin D SUB parallel port
1 3-pin header to CPU or chassis fan
1 3-pin header to CPU or chassis fan
1 4-pin header through an adapter cable to an optical drive
1 4-pin header through an adapter cable to audio source such as
CD-ROM or DVD player
1 2x5 pin digital I/O connector
2 ATA-100 40-pin connectors
1 34-pin floppy connector
1 1 x 5 pin header for Infrared connection
1 LCD backlight (Inverter control)
CN1
CN2
CN3
CN6
CN7
CN8
CN9
CN12
CN13
CN14
CN15
1 CF II Compact Flash socket
1 A combo con nector assembly providing access to one GbE Ethernet
(RJ-45) port and two USB ports.
1 14-pin pin header provides the connectivity to Power LED, Hard Disk
Activity LED, Power switch, and the reset pins.
1 3 phone jacks for audio line_in, line_out, and mic_in connections
1 SPDIF input
1 Analog audio output
1 Digital audio output
1 Auxiliary RS-232 serial port
1 30-pin LVDS LCD panel connection
1 SATA disk drive port
1 SATA disk drive port
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NOTE:
The interface description is divided into two sections, internal connectors
mounted on the motherboard and the connectors interfaced through the
board-edge rear panel.
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2.2.1 Internal Connectors
1. COM Ports (COM2 to COM6)
The IMB-8550 offers two high speed NS16C550 compatible UART’s with 16-byte
Read/Receive FIFO serial ports.
Table 2-4 COM Port (Internal) Pinouts
PIN DESCRIPTION PIN DESCRIPTION
1 DCD- 2 SIN
3 SOUT 4 DTR5 GND 6 DSR7 RTS- 8 CTS9 RI 10 GND
Figure 2-3 COM Port Locations
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IMB-8550
NOTE:
There is one D SUB COM port (COM1) on the rear panel. The rest of the
COM ports are interfaced through the 2x5 pin headers located on the
motherboard.
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2. USB (Internal) Ports
This 2x4 pin connector provides the connectivity to additional two USB 2.0 ports. In addition
to the four (4) USB ports on the rear panel, the internal USB ports are provided in one (1) 2x4
pin header.
The Compact Flash socket provides an alternative to hard disk drives in applications where
hard disk drives may consume too much space and storage capacity is not a requireme nt.
The CF card behaves like a Secondary IDE Master disk drive.
This Digital I/O port is managed through a Winbond W83627HF LPC I/O chip. The first table
below shows the DIO port pinouts. The second table displays the referential pin connection
to the I/O chip.
General purpose I/O port 1 bit 4
General purpose I/O port 1 bit 5
General purpose I/O port 1 bit 6
General purpose I/O port 1 bit 7
General purpose I/O port 1 bit 3
General purpose I/O port 1 bit 2
General purpose I/O port 1 bit 1
General purpose I/O port 1 bit 0
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9. IDE Connectors (IDE1 & IDE2)
Two (2) IDE connectors prov ide the connectivity to up to four (4) IDE devices. If the Compact
Flash module is configured to operate as the Secondary IDE master, the secondary IDE
connector will then be disabled.
Table 2-13 IDE Connector Pinouts
PIN DESCRIPTION PINDESCRIPTION
1 RESET# 2 GND
3 DATA 7 4 DATA 8
5 DATA 6 6 DATA 9
7 DATA 5 8 DATA 10
9 DATA 4 10 DATA 11
11 DATA 3 12 DATA 12
13 DAT A 2 14 DATA 13
15 DAT A 1 16 DATA 14
17 DAT A 0 18 DATA 15
19 GND 20 (KEY)
21 DRQ 22 GND
23 IOW# 24 GND
25 IOR# 26 GND
27 CHRDY 28 GND
29 DACK 30 GND
31 INTERRUPT 32 N/C
33 SA1 34 P66DET
35 SA0 36 SA2
37 HDC CS0# 38 HDC CS1#
39 HDD ACTIVE# 40 GND
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Figure 2-10 IDE Connectors
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10. FDD1 (Floppy) Port
The FDD 1connector is used to connect a floppy cable while the other end of the cable
connects to the FDD drive(s). The types of FDD drives supported are: 360KB, 720KB, 1.2MB,
1.44MB and 2.88MB. Please connect the red power connector wire to the pin1 position.
For the inherent limitation by Intel chipset, currently the 24-bit and 48-bit IEGD (Intel
Embedded Graphics Drivers) modes are not supported.
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Figure
2-14 LVDS LCD Panel Connection Port
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14. JP8: LCD Voltage 5V/3.3V Selector
For details on the JP8 selector, please refer to Chapter 3. Please carefully select the correct
voltage for an LCD panel. Damage will occur if the wrong voltage is selected.
15. J1: Inverter Control
This connector comes as a 1x5 pin Wafer 2mm connector. Pin 5 enables power on/off
backlight during the power saving mode.
2-18 J1 Inverter Connector Pinouts
Table
PIN DESCRIPTION PIN DESCRIPTION
1 VCC+5V 2 GND
3 VCC+12V 4 GND
5 LCD_BKLEN
Figure 2-15 J1 Inverter Control
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16. CN8: Analog Audio Output
CN8 is a 2x5 9-pin pin header for interfacing analog audio signals with external audio devices.
Please refer to the previous page for its location.
18. CN7: SPDIF Input
CN7 is a 5-pin pin header for connecting an adapter cable for receiving SPDIF signals.
2-21 CN7 SPDIF Input Pinouts
Table
PIN DESCRIPTION PIN DESCRIPTION
1 VCC5 2 N/C (keyed)
3 SPDIFOUT 4 GND
5 SPDIFIN
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Figure
2-17 CN7 SPDIF Input
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19. Serial ATA Ports (CN14 & CN15)
These two (2) connectors provide the connectivity to Serial ATA disk drives using the Serial
ATA signal cables. These ports support serial ATA data transfer rate up to 150MB/s.
2-22 Serial ATA Port Pinouts
Table
PIN DESCRIPTION PIN DESCRIPTION
1 GND 2 STXP
3 STXN 4 GND
5 SRXN 6 SRXP
7 GND
CAUTION!
Your SATA ha rd drives may come with both a 4P power connector and a SA TA power
interface. Attach either the 4P connector or the included SATA power cable to your
SATA hard drives.
hard drives all at the same time! Doing so will cause damage.
DO NOT attach both types of power connectors to your SATA
Figure 2-18 Serial ATA Port
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NOTE:
1. The Serial ATA has its limitations with the operating systems. Serial AT A
is supported by Windows 2000 SP4, Windows XP SP1, Windows 2003,
or later versions.
2. Older OSes, such as Windows 98SE or ME, do not support Serial ATA
interface.
This port allows Gigabit connection to Local Area Network (LAN) through a network hub.
Refer to the table below for the LAN port LED indication.
IMB-8550
Table
2-26 Ethernet Port Pinouts
PIN DESCRIPTION PIN DESCRIPTION
1 TXD+ 8 GND
2 TXD- 9 GRN+
3 RXD+ 10 GRN-
4 CT_TXD 11 YEL-
5 CT_RXD 12 YEL+
6 RXD- 13 S GND
7 N/C 14 S GND
Figure 2-23 GbE Ethernet LAN (RJ-45) Port
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LAN Port LED Indications
Table 2-27 LAN Port LED Indications
STATUS
GREEN Activity YELLOW Linked
DESCRIPTION STATUS DESCRIPTION
6:Audio Phone Jacks
Line In port (Light Blue): This port connects a CD-ROM, DVD player, or other audio
Line Out port (Lime): This port connects a headphone or a speaker. With
Microphone (Pink): This port connects a microphone.
7: VGA Port
The standard 15-pin VGA connector connects to a CRT or LCD display monitor.
devices.
multi-channel configurations, this port can also connect to
front speakers.
8: COM1 Serial Port
This is a D SUB serial port COM1.
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2.3 Onboard LED
The LED1 lights up when power is supplied to the motherboard.
IMB-8550
Figure 2-24 LED1 Location
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Chapter
3
Installation
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3.1 Considerations Prior to Installation
Preparing Your Motherboard
The Motherboard contains numerous delicate electronic circuits and components, which can
become damaged as a result of electrostatic discharge (ESD). Thus, prior to installation, please
follow the instructions below:
1. Please turn off the computer and unplug its power cord.
2. When handling the motherboard, avoid touching any metal leads or connectors.
3. It is best to wear an electrostatic discharge (ESD) cuff when handling electronic components
(CPU, RAM).
4. Prior to installing the electronic components, please have these items on top of an antistatic
pad or within an electrostatic shielding container.
5. Please verify that the power supply is switched off before unplugging the power supply
connector from the motherboard.
Installation Notices
1. Prior to installation, please do not remove the stickers on the PCB board. These stickers are
required for warranty validation.
2. Prior to the installation of the Motherboard or any hardware, please first carefully read the
information in the provided manual.
3. Before using the product, please verify that all cables and power connectors are connected.
4. To prevent damage to the PCB board, please do not allow screws to come in contact with the
PCB circuit, connector pins, or its components.
5. Please make sure there are no leftover screws or metal components placed on the
motherboard or within the computer casing.
6. Please do not place the computer system on an uneven surface.
7. Turning on the computer power during the installation process can lead to damage to system
components as well as physical harm to the user.
8. If you are uncertain about any installation steps or have a problem related to the use of the
product, please consult a certified computer technician.
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WARNING!
Never run the motherboard without an appropriate heatsin k and cooler
that can be ordered from IEI Technology or purchased separately.
Unpacking Precautions
Some components on the IMB-8550 are very sensitive to static electric charges and can be
damaged by a sudden rush of power. To protect it from unintended damage, be sure to follow
these precautions:
Ground yourself to remove any static charge before touching your IMB-8550
motherboard. You can do so by using a grounded wrist strap at all times or by
frequently touching any conducting materials that is connected to the ground.
Handle your motherboard by its edges. Do not touch IC chips, leads or circuitry if not
necessary.
Do not plug or unplug any connector or jumper while the power is on.
Do not place a PCB on top of an anti-static bag. Only the inside of the bag is safe
from static discharge.
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3.2 Jumper Settings
NOTE:
A jumper is a metal bridge that is used to
close an electrical circuit. It consists of
two metal pins and a small metal clip
(often protected by a plastic cover) that
slides over the ins to connect them. To
CLOSE/SHORT a jumper means
connecting the pins of the jumper with
the plastic clip and to OPEN a jumper
means removing the plastic clip from a
Figure 3-1 Jumper
jumper.
JP1 (Clear CMOS)
Figure 3-2 JP1 Jumper Location
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In case the motherboard fails to boot due to user’s improper BIOS setting, this jumper can
be used to clear the CMOS data and reset the system BIOS information. To clear the
CMOS contents, shunt pins 2 and 3 for a few seconds, and then reinstall the jumper clip
back to pins 1 and 2.
If the “CMOS Settings Wrong” message displays during the boot up process, you may
then try to correct the fault by pressing the F1 to enter the CMOS Setup menu. You may
then enter the correct CMOS setting, Load Optimal Defaults, or Load Failsafe Defaults.
Save your changes and exit the CMOS Setup menu.
JP1 Pin Configuration
Table 3-1 JP1 Pin Configuration
JP1 CLEAR CMOS
1-2 closed Normal (default)
2-3 closed CLEAR CMOS
CAUTION!
1. In normal condition, pins 1 and 2 must always stay in CLOSED
condition.
2. Power must be turned OFF before clearing CMOS data.
1. Please note that the installation instructions described in this manual
should be carefully followed in order to avoid damage to the board
components.
2. Static-free installation environment: The IMB-8550 must be installed in a
static-free environment to minimize the possibility of electrostatic
discharge (ESD) damage. Use of an anti-static wo rk pad or a grounded
IMB-8550
anti-static wrist strap is strongly recommended. To avoid damaging the
board components due to static electricity, never place your board
directly on a surface that is not static-free, e.g., a carpet.
3. Always hold components by the edges and do not touch the ICs and
connector pins.
4. Do not remove a component from its anti-static bag before installation.
5. Before you proceed with the installation process, check the CPU surface
and check for bent pins on the socket.
6. While installing the CPU, do not use force, serious d amage to the CPU or
CPU socket might occur.
To install Intel 479-pin CPU onto your motherboard, follow the steps below:
Step 1. Check if the retention screw on your CPU socket (mPGA479M) is turned to the unlock
position. The CPU socket should arrive in the unlock condition; however, it is better
you check the retention screw before you proceed with the rest of the procedure.
The CPU installation process requires a flathead screwdriver to complete.
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Figure 3-7 479-pin Socket
Step 2. Inspect the CPU socket for bent pins and make sure that the socket contacts are free
of foreign material. Inspect socket contacts with one eye clo sed and from different
angles. If debris should be found, remove them using the compressed air.
Step 3. Orient the CPU so that the pin 1 mark matches the cut edge on the CPU socket
and carefully place it on top of the socket. When properly placed, the socket
should receive the CPU pins properly.
Note the following when installing the CPU:
Hold the CPU by the edges.
Orient the CPU with the IHS (Integrated Heat Sink) side facing upward.
Locate pin 1 mark on CPU.
Carefully place the CPU into the socket with a gentle and vertical motion.
Step 4. Use a flathead screwdriver to rotate the retention screw to the locked position.
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Figure 3-8 Securing CPU by Rotating the Retention Screw
Step 5. Now you have completed the CPU installation process. For details on installing the
CPU heatsink and cooler, please refer to the next section.
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Cooling Kit (CF-518) Installation
Figure 3-9 IEI CF-518 Cooling Kit
IEI provides a cooling kit designed for socket 479 CPU. The cooling kit is comprised of a CPU
heatsink, and a cooling fan.
NOTE:
The CF-518 heatsink comes with a sprayed layer of thermal paste. Make
sure you do not accidentally wipe away the thermal paste while unpacking
or installing the heatsink. Thermal paste between the CPU and the heatsink
is important for optimum heat dissipation.
Installation Steps:
Step 1. Place the heatsink onto the CPU. Make sure that the CPU cable can be properly
routed when the heatsink is installed.
Step 2.Align the heatsink so that its four (4) threaded screw fasteners can pass through the
through holes on PCB.
Step 3.From the other side of PCB, align the provided nut caps to the heatsink’s screw
threads that come through the PCB holes.
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Figure 3-10 Securing Heatsink through the PCB through-holes
Step 4. Use a flathead screwdriver to tighten the four (4) fasteners on the heatsink. Tighten
each nut caps a few turns at a time, and do not over-tighten the screws for that may
cause damage to the PCB.
Step 5.Connect the fan cable on the cooler fan to the FAN1 CPU fan connector on the
motherboard. Carefully route the cable and avoid heat generating chips and fan
blades.
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Figure 3-11 Connecting FAN1 Connector
Step 6. You are done with heatsink installation.
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DIMM Installation
The IMB-8550 provides two (2) DIMM sockets for a maximum total memory module up to 2GB
DDR SDRAM.
To install memory module, first make sure the two white clips on the DIMM socket are in the “op en”
position (the handles lean outward).
Verify the orientation of the module by checking the notch on the memory module. Slowly slide
the DIMM module along the plastic guide on both ends of the socket, then press the DIMM module
down into the socket, until you hear a “click” sound. This is when the two clips have automatically
locked the module into the correct position of the DIMM socket. To remove the DIMM module,
push both handles outward, and the memory module should be ejected by the mechanism in the
socket.
Connections to the Peripherals
IEI provides the following cables to facilitate connections to your peripheral devices. For more
information on the locations of the connectors, please refer to Chapter 2. Cables not included in
kit are user supplied items and should be separately purchased.
No. Type
2 ATA 66/100 flat cable
2 SATA cables
1 SATA power cable
3 RS-232 cable (2 x 2 kit; 1 x 1 kit)
1 Rear panel I/O bracket
Table 3-6 Cables Included in Kit
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IDE Disk Drive and CDROM Connector (IDE1 & IDE2)
The IMB-8550 provides two IDE channels which allow the connection to two Enhanced Integrated
Device Electronics hard disk drives or CDROM. The IDE controller is attached to a PCI interface.
The advanced IDE controller supports PIO mode 3, mode 4 and up to UDMA/100 in transfer
speed.
Connecting Hard Disk Drives
IDE bus devices are daisy-chained using a standard 44-pin IDE cable. The connection is made
by connecting one end of the cable to the IDE connectors. The connector has a keyed pin which
prevents you from inserting the connector in a wrong direction. The read wire corresponds to pin
1 on the connector.
Plug the other end of the cable into the Enhanced IDE hard drive, with pin 1 on the cable
corresponding to pin 1 on the hard drive.
Note that when connecting two IDE disk drives you will have to configure one as the master and
the other slave. The configuration is done by setting the back-end jumpers on the disk drives.
Floppy Drive Connector (FDD1)
This connector provides access to two externally mounted floppy drives (3.5”-profile, 720 KB, 1.44
MB, and 2.88 MB types floppy drives.
Connecting the Floppy Drives
1. Make sure that the red wire of your floppy cable corresponds to pin one on the connector.
2. Attach the appropriate connector on the other end of the cable to the floppy drive(s). You can
use only one connector in the set. The connection sequence determines which of the two
connected floppy drives is drive A: and which is drive B.
Compact Flash Disk
When appropriately formatted, a compact Flash disk can serve as a bootable hard drive in
applications where installation space is limited. The Compact Flash card occupies a secondary
IDE channel. Configuration options can be found through the configuration jumpers and BIOS
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configuration utility.
Parallel Port Connector (LPT1)
Parallel port connects to a printer. The IMB-8550 comes with a multi-mode (ECP/EPP/SPP)
parallel port. The LPT1 parallel port interface features a traditional DB-25 connector. The
parallel interface can be re-assigned to LPT2 or LPT3 through the BIOS configuration utility.
The default interrupt channel is IRQ7. Select ECP or EPP DMA mode using the BIOS
configuration utility.
Audio Interface
Audio Connector (CN6)
AC’97 Audio signals are interfaced through the phone jacks combined into the CN6 connector.
These signals include Microphone line-in, line-in stereo, and line-out stereo. In addition to the
phone jacks, the IMB-8550 is also equipped with separate connectors for Analog/Digital outputs
and SPDIF inputs.
COM Port Connectors (COM1 to COM6)
The IMB-8550 provides six (6) serial ports, and the serial port operation mode can be configured
through an onboard jumper set (RS-232/422/485). The COM1 port is interfaced through one
DB-9 connector and the rest of the COM ports are interfaced through individual 10-pin male
headers. These serial ports facilitate the connection to serial devices or a communication
network, e.g., terminal console.
LCD Panel Connection (VGA1 and CN13)
The APG SVGA interface on the IMB-8550 connects conventional CRT displays and flat panel
displays including passive LCD and active LCD displays. There are two connectors onboard for
display connections:
1. CRT VGA monitors
2. LVDS type LCD panels
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One CRT display connector (VGA1) is provided as a 15-pin, female D-SUB to connect
conventional CRT displays. Pin assignments can be found in Chapter 2 Functional Description.
LVDS Connector (CN13):
The graphics display is powered by the north-bridge chipset that supports Dual-channel up to
48-bit or 36-bit (2 x 18-bit) LVDS LCD panel displays, either an 18-bit, 36-bit, or 48-bit LVDS can
be connected to the CN13 LVDS 30-pin connector.
PCI Bus Interface
The main features include:
Rev. 2.1 compliant implementation
Integrated PCI arbitration interface
Translation of PCI cycles to ISA bus master
Translation of ISA initiated cycles to PCI
Support for burst Read/Write from PCI master
33MHz PCI clock
Ethernet Connection (LAN Port on CN2)
The onboard 32-bit PCI-bus Ethernet interface is fully compliant with IEEE 802.3 1000Mbps
standard, 100BaseT_TX, and 10BaseT application s (802.3, 802.3u, and 802.3ab). The
10/100/1000BaseT connector (LAN1) connections are made via the RJ-45 connector on the front
edge.
USB Connection (USB1 and USB Ports on CN2)
The combo USB header (USB1) provides the connectivity of two (2) USB (Universal Se rial Bus)
ports. CN2 provides another two (2) USB ports. USB2 on the motherboard, an 8-pin header,
provides the connectivity of another two (2) USB ports. The USB interface features complete
Plug and Play, and hot attach/detach for up to 127 external devices, compliance with USB
specification Rev. 2.0. An adapter 10-pin-to-USB cable is provided in kit. The USB interface is
accessed through either through the USB connectors on the rear panel or the pi n conne ctor. The
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adapter cable has one (1) 4x2-pin connector on one end and a standard USB conne ctor on the
other.
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Chapter
4
AMI BIOS Setup
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Introduction
This chapter discusses AMI's Setup program built into the ROM BIOS. The Setup program
allows users to modify the basic system configuration. This special information is then stored in
battery-backed RAM so that it retains the Setup information when the power is turned off.
Starting Setup
The AMI BIOS is immediately activated when you first power on the computer. The BIOS reads
the system information contained in the CMOS and begins the process of checking out the system
configuration. When it finishes, the BIOS will seek an operating system on one of the disks and
then launch and turn control over to the operating system.
While the BIOS is in control, the Setup program can be activated in one of two ways:
1. By pressing <Del> immediately after switching the system on, or
2. By pressing the <Del> key when the following message appears briefly at the bottom of
the screen during the POST.
Press DEL to enter SETUP.
If the message disappears before you respond and you still wish to enter Setup, restart the system
to try again by turning it OFF then ON or pressing the "RESET" button on the system case. You
may also restart by simultaneously pressing <Ctrl>, <Alt>, and <Delete> keys.
Using Setup
In general, you use the arrow keys to highlight items, press <Enter> to select, use the PageUp and
PageDown keys to change entries, press <F1> for help and press <Esc> to quit. The following
table provides more detail about how to navigate in the Setup program using the keyboard.
Key Function
Up arrow Move to previous item
Down arrow Move to next item
Left arrow Move to the item on the left hand side
Right arrow Move to the item on the right hand side
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Esc key Main Menu – Quit and not save changes into CMOS
Status Page Setup Menu and Option Page Setup
Menu -- Exit current page and return to Main Menu
Page Up key Increase the numeric value or make changes
Page Dn key Decrease the numeric value or make changes
F1 key General help, only for Status Page Setup Menu and
Option Page Setup Menu
F2 /F3 key Change color from total 16 colors. F2 to select color
forward.
F10 key Save all the CMOS changes, only for Main Menu
Table 4-1 BIOS Function Keys
IMB-8550
Getting Help
Press F1 to pop up a small help window that describes the appropriate keys to use and the
possible selections for the highlighted item. To exit the Help Window press <Esc> or the F1 key
again.
If, after making and saving system changes with Setup, you discover that your computer no longer
is able to boot, the AMI BIOS supports an override to the CMOS settings which reset your system
to its defaults.
The best advice is to only alter settings which you thoroughly understand. To this end, we
strongly recommend that you avoid making any changes to the chipset defaults. These defaults
have been carefully chosen by both AMI and your systems manufacturer to provide the absolute
maximum performance and reliability. Even a seemingly small change to the chipset setup has
the potential for causing you to use the override.
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BIOS Menu Bar
The menu bar on top of the screen has the following main items:
Main For changing the basic system configuration.
Advanced For changing the advanced system settings.
PCIPnP For changing the advanced PCI/PnP Settings
Boot
Security Use this menu to set User and Supervisor Passwords.
ChipsetFor changing the chipset setting.
PowerFor changing the power management setting.
Exit For selecting the exit options and loading default settings.
For changing the system boot configuration.
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4.1 Main
When you enter the BIOS Setup program, the Main menu screen appears giving you an overview of
the basic system information.
AMI BIOS This item displays the auto-detected BIOS information.
Processor This item displays the aut o-detected CPU specification.
System Memory This item displays the auto-detected system memory.
System Time [xx:xx:xx] This item allows you to set the system time.
System Date [Day xx/xx/xxxx] This item allows you to set the system date.
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4.2 Advanced
The Advanced menu items allow you to change the settings for the CPU and other system
devices.
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CPU Configuration
This menu contains items shown in the CPU-related information window that are automatically
detected by BIOS.
Max CPUID Value Limit
This item should be disabled for Windows XP.
Configuration options: [Disabled] [Enabled]
Intel SpeedStep™ Technology [Maximum Speed]
If set to “Automatic” here in the BIOS configuration utility, you can make use of the Power
saving feature in your operating system. If set to “Maximum” or “Disabled,” the Enhanced Intel
SpeedStep Technology (EIST) feature will be disabled in your OS. The EIST feature allows
CPU to step down on its internal frequency when the workload is light.
Configuration options: [Maximum] [Disabled] [Automatic] [Minimum]
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IDE Configuration
The items in this menu allow you to set or change the configurations for the IDE devices installed
in the system. Select an item then press Enter if you wish to configure the item.
NOTE:
1. Due to the limitations by system BIOS integration, the SA TA control (ALi M5283) drivers
should be manually installed.
2. To enable Serial A TA drive connectivity , the SA T A ROM option should also be enabled in
the “Chipset” -> “Southbridge Configuration” menu.
3. The SATA drivers can be found in the Utility CD shipped with the motherboard. Please
refer to Chapter 5 for more information.
ATA/IDE Configuration [Disable/Combined/Enhanced]
Disabled: Disable this function.
Compatible: You can use up to 6 HDDs on the motherboard; 2 for SATA and the other for P ATA
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IDE disk drives.
Enhanced: The motherboard allows up to 6 HDDs to use. The Enhanced mode triggers one
advanced option which allows you to configure your SATA drives into RAID
volumes. The RAID configuration also requires Intel or ALi’s (depending on the
chipset applied) software utilities installed on your operating sy stem.
When set to the Enhanced mode, a different option for SATA drives, “Configure
SATA as,” will appear. This option allows you to configure your disk drives into
RAID volumes or make them behave like ordinary IDE disk drives.
NOTE:
1. There are ways to access Intel’s or other chip provider’s (e.g., ALi)
proprietary RAID configuration utility such as pressing the Ctlr+I or Ctlr+A
keys together during POST. The access may vary and it is recommended
to refer to the chip provider’s documentation for more information.
2. RAID configurations protect your data and increase access performance by
spinning disk drives together. However, you should consider the
drawbacks of using RAID. For example, RAID 0 boosts performance but
does not provide protection to your data. With RAID 1, you can only use
half of the capacity of your disk drives.
Legacy IDE Channels
Available options are: [SATA Only] [PATA Pri, SATA Sec] [SATA Pri, P ATA Sec] [PATA Only]
Primary and Secondary, Third IDE 0/1
The values opposite the dimmed items (Device, Vendor, Size, LBA Mode, Block Mode, PIO Mode,
Async DMA, Ultra DMA, and SMART monitoring) are auto-detected by BIOS and are not
user-configurable. These items show N/A if no IDE device is installed in the system.
Type [Auto]
Selects the type of IDE drive. Setting to Auto allows automatic selection of the appropriate I DE
device type. Select CDROM if you are specifically configuring a CD-ROM drive. Select ARMD
(ATAPI Removable Media Device) if your device is either a ZIP, LS-120, or MO drive.
Enables or disables the LBA mode. Setting to Auto enables the LBA mode if the device
supports this mode, and if the device was not previously formatted with LBA mode disabled.
Configuration options: [Disabled] [Auto]
Block (Multi-Sector Transfer) [Auto]
Enables or disables data multi-sectors transfers. When set to Auto, the data transfer from and
to the device occurs multiple sectors at a time if the device supports multi-sector transfer
feature. When set to Disabled, the data transfer from and to the device occurs one sector at a
time.
Configuration options: [Disabled] [Auto]
PIO Mode [Auto]
Selects the PIO mode.
Configuration options: [Auto] [0] [1] [2] [3] [4]
Sets the Smart Monitoring, Analysis, and Reporting Technology.
Configuration options: [Auto] [Disabled] [Enabled]
32Bit Data Transfer [Disabled]
Enables or disables 32-bit data transfer.
Configuration options:[Disabled] [Enabled]
Hard Disk Write Protect
This item allows you to disable/enable device write protection. This will be effective only if device
is accessed through BIOS.
Configuration options: [Disabled] [Enabled]
IDE Detect Time Out (Sec)
This item allows you to select the timeout value for detecting ATA/ATAPI devices. Default is
recommended unless particular cases occur, e.g., with a slow-initiating device.
Configuration options: [0] [5] [10] [15] [20] [25] [30] [35]
ATA(PI) 80Pin Cable Detection
This item allows you to select the mechanism for detecting 80-pin ATA(PI) cables.
Configuration options: [Host & Device] [Host] [Device]
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Floppy Configuration
Sets the type of floppy drive installed.
Configuration options: [Disabled][360KB, 5.25 in.][1.2MB, 5.25 in.][720KB, 3.5 in.] [1.44MB, 3.5 in.]
[2.88MB, 3.5in.]
Super IO Configuration
On Board Floppy Controller [Enabled]
Allows you to enable or disable the floppy disk controller.
Configuration options: [Disabled] [Enabled]
Floppy Drive Swap [Disabled]
Allows you to designate a floppy drive letter as A or B without making a change to its physical
connection.
Configuration options: [Disabled] [Enabled]
Serial Port1 Address [3F8/IRQ4]
Allows you to select the Serial Port1 base address.
Configuration options: [Disabled] [3F8/IRQ4] [3E8/IRQ4] [2E8/IRQ3]
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Serial Port2 Address [2F8/IRQ3]
Allows you to select the Serial Port2 base address.
Configuration options: [Disabled] [2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]
Parallel Port Address [378]
Allows you to select the Parallel Port base addresses.
Configuration options: [Disabled] [378] [278] [3BC]
Parallel Port Mode [Normal]
Allows you to select the Parallel Port mode.
Configuration options: [Normal] [Bi-directional] [EPP] [ECP] [ECP & EPP]
Parallel Port IRQ [IRQ7]
Configuration options: [IRQ5] [IRQ7]
For the options available with other serial ports, scroll the pull-down menu using the arrow keys.
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Hardware Health Configuration
IMB-8550
H/W Health Function
The only configurable option here allows you to enable or disable the hardware health monitoring
function.
Available options are: [Disabled] [Enabled]
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ACPI Configuration
Allows you to change the settings fo r the Advanced Configuration a nd Po wer I nt erf ace (A CPI) and
Power Management (APM). Select an item then press Enter to display the configuration options.
ACPI Aware O/S
The configuration of this option depends on whether your OS complies with the ACPI standard.
Default is Yes and is the Fail-safe option. Windows 98, Windows 2000, and Windows XP all
complies with ACPI.
Configuration options: [Yes] [No]
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General ACPI (Advanced Configuration and Power Interface) Configuration
Allows you to select the ACPI state to be used for system suspend.
Suspend Mode:
Configuration options: [S1 (POS)]
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Advanced ACPI Configuration
Use this section to configure additional ACPI options.
ACPI APIC support
Includes A CPI APIC table pointer to RSDT pointer list.
Configuration options: [Enabled] [Disabled]
AMI OEMB table
Includes OEMB table pointer to R(X)SDT pointer lists
Configuration options: [Enabled] [Disabled]
Headless mode
Enables or disables headless operation mode through ACPI.
Configuration options: [Enabled] [Disabled]
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