American Megatrends NR115 User manual

NR115
Intel® 845 Motherboard
USER’S MANUAL
Intel® Pentium®4 Processor Motherboard
Rev. 1.0

NR115 Motherboard
Revision History
Revision Date Description
1.0 Initial release of NR115 motherboard user’s manual
Item Checklist
1 NR115 Motherboard
1 Floppy Cable
1 ATA Cable 66/100
1 I/O Shield
1 Heatsink Retention Module
1 CD for Motherboard Driver
NR115 User Manual
Quick Installation Guide
Intel® Pentium® 4 are registered trademark of Intel Corporation.
Copyright © 2001, Lite-On Tech./ System BU

NR115 Motherboard
Safety Instructions
Please follow some precautions when operating your computer.
1. Always unplug the power cord when inserting any add-on card or module inside the system.
2. Use a grounded wrist strap before handling computer components. If one is not available, touch both of your
your hands to a safely grounded object or to a metal object.
3. Place components on a level grounded antistatic pad or on the packaging that came with the components
whenever the components are separated from the system.
4. Keep equipment away from moisture and humidity.
5. Keep this User’s Manual for future reference.

NR115 Motherboard
Table of Contents
Chapter 1. Introduction …………………………………………………………………… 1
Motherboard Specification …………………………………………………………………………. 1
NR115 Motherboard Layout …………………………………………………………………….…. 3
Chapter 2. Hardware Installation Process ………………………………………..4
Installing Central Process Unit (CPU) ……………………………………………………………..4
Installing Memory Modules ………………………………………………………………………… 6
Connecting IDE and Floppy Disk Cables and Drives ……………………………………………7
Installing Expansion Cards ………………………………………………………………………… 9
Connect Power Supply Cable ……………………………………………………………………. 10
I/O Back Panel Introduction ………………………………………………………………………. 11
Jumpers Introduction ……………………………………………………………………………… 13
Chapter 3. AMI® BIOS Setup ………………………………………………………….. 16
Entering Setup ……………………………………………………………………………………... 16
The Main Menu ……………………………………………………………………………………. 16
Standard CMOS Setup …………………………………………………………………………… 17
Advanced CMOS Setup ……….…………………………………………………………………. 18
Advanced Chipset Setup …………………………………………………………………………. 19
Power Management Setup ……………………………………………………………………….. 20
PCI/Plug and Play Setup …………………………………………………………………………. 21
Peripheral Setup …………………………………………………………………………………… 22
Hardware Monitor Setup ………………………………………………………………………….. 23
Auto-Detect Hard Disks …………………………………………………………………………… 24
Change User Password …………………………………………………………………………... 25
Change Supervisor Password ……………………………………………………………………. 26
Auto Configuration with Optimal Settings ……………………………………………………….. 27
Auto Configuration with Fail Safe Settings ……………………………………………………… 28
Save Settings and Exit ……………………………………………………………………………. 29
Exit Without Saving ………………………………………………………………………………... 30

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1
Chapter 1 Introduction
Motherboard Specifications
Form Factor:
• Standard µATX 9.6”x 9.6”
Processor:
• Supports single IntelPentium4 Processor in 478 ball FC-PGA2 package
• Processor socket mPGA478B
• 400 MHz system bus
Cache Memory:
• Processor integrated level-1 cache and level-2 cache.
System Memory:
• Two 184-pin DIMM socket (90 degree, tin plated contact)
• Support PC200/266 DDR SDRAM
• Support 64Mb, 128Mb, 256Mb, and 512Mb DDR_SDRAM devices
• Support minimum 64MB to 2GB maximum
• Support suspend -to-RAM sleep state (ACPI S3)
Core Logic Chipset:
• Inteli845 MCH (Memory Controller Hub) in 593 ball FC-BGA package
• Intel 82801BA ICH2 (I/O Controller Hub 2) in 360 ball EBGA package
• Intel 82802AB 2 Mb FWH (Firmware Hub) or equivalent.
• AGP Controller
• AGP v2.0 compliant.
• Supports 1x/2x/4x AGP signaling and 2x/4x Fast Writes
• Optimized point-to-point topology using 1.5V signaling in 4x mode.
• 66 MHz asynchronous clock AGP-to-Host interface.
PCI bus:
• PCI 2.2 compliant
• PME# and 3.3Vaux signals to support power management.
Audio:
• ADI AD1885 analog CODEC
• AC’97 Revision 2.1 compliant (Integrated in ICH2)
• Three mini-DIN audio jacks (Line-out, Line-in, and Mic-in)
•
•
•
Two audio headers, locking type: CD-in, Aux-in

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2
On board EIDE:
• 2x PCI IDE ports supporting up to 4 devices
• Support ATA-33/66/100, PIO up to mode 4
On board I/O:
• Low Pin Count (LPC) 3.3V interface between FWH and ICH2
• 2 serial ports - DB9 (16550 UART).
• 1 Parallel Port - DB25 with ECP/EPP support.
• 1 Floppy port with 1.2MB, 1.44MB and 2.88MB support.
• 1 PS/2 mouse connector, 1 PS/2 keyboard connector.
• 3 fan output headers.
• 4 USB Ports: 2 ports with RJ-45/USB connector in back panel, 2 ports with 2X5 header for
front panel connection.
BIOS:
• Plug & Play BIOS (AMI).
• 2Mb Firmware Hub
• ACPI v2.0 – WfM 2.0 – SMBIOS v2.3 – DMI v2.1 – PC2001.
• Auto detect for: CPU Speed – AGP 4X – ATA-100.
• Wake-on PS/2 (KB, Mouse) & USB devices.
• Rapid Boot support
• WOL, ASF support
• Power management: ACPI S3, S4 support
Additional Features:
• Case intrusion header
• Thermal sensor & CPU monitoring.
• NIC with integrated MBA boot (complete WOL support)
• BIOS recovery & Boot-Block overwrite via jumper.
• Hardware Monitor Capability (SMSC LPC47M192).
• Optional On Board LAN
Expansion Slots:
• 1 AGP Slot (2X/4X mode).
• 3 PCI Slots (including 1 shared PCI/CNR Slot)
Other:
• Front panel I/O 2X9 header, key pin 14.
• On-board buzzer.

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3
NR115 Motherboard Layout
A CPU Socket G Jumper Connector
B CPU Fan Socket H Front Panel Connector
C Memory Sockets I Front Side USB
D Power Supply Connector J Expansion Slots
E Floppy Connector K Audio Connector
F IDE Connectors L Back Panel Connectors
Front Panel Connector Pin Definition
Pin Signal Name I/O Description
1 HD_PWR O Hard Disk LED pull-up to VCC
2 HDR_BLNK_GRN O Front panel Green LED signal
3 HDA* O Hard Disk Active LED signal
4 HDR_BLNK_YEL O Front panel Yellow LED signal
5 GND - Ground
6 FPBUT_IN I Front panel On/Off button signal
7 FP_RESET* I Front panel Reset button signal
8 GND - Ground
9 VCC O
10 FPSLP* I Front panel sleep button signal
11 IRRX I IRDA serial input
12 GND - Ground
13 GND - Ground
14 KEY - KEY
15 IRTX O IRDA serial output
16 VCC O
17 NC - not connected
18 NC - not connected
.
A
B
C
D
D
E
F
H G
J
K
L
I

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Chapter 2 Hardware Installation Process
Installing the Central Process Unit (CPU)
CPU Installation
1. Unlock the CPU socket by pulling the lever up to a 90-degree angle.
2. Position the CPU above the socket such that the marked corner (pin1) matches the corner near the base
of the lever.
3. Place the CPU into the socket. If the CPU is unable to insert properly, check its orientation and attempt
to re-install.
Warning! Do not force the CPU into the socket. Doing so will prompt bending of the pins and create
damage to the CPU.
4. Close the socket by lowering the lever and locking the lever in place.
Step 1
90 degree angle
Step 2
Pin1

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Installing the Central Process Unit (CPU)
cont.
CPU Heat Sink Installation
1. Read the related CPU heat sink user’s manual for more detailed installation procedures.
2. Connect CPU fan power cable into the CPU fan connector on the motherboard.
CPU Fan Connector

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Installing Memory Modules
1. Push the white retaining clips on each of the memory socket outwards.
2. Match the notches on the contact edge of the memory module to the ridges in the memory socket.
3. Insert the memory module vertically into place. When properly inserted, the white retaining clips will
move inward to lock in the module.
4. Repeat installation process when adding additional modules.
Total Memory Sizes With Unbuffered DDR DIMM
Devices used on DIMM 1 DIMMx64/x72 2 DIMMsx64/x72
64 Mbit (2Mx8x4 banks) 128 MBytes 256 MBytes
64 Mbit (1Mx16x4 banks) 64 MBytes 128 MBytes
128 Mbit (4Mx8x4 banks) 256 MBytes 512 MBytes
128 Mbit (2Mx16x4 banks) 128 MBytes 256 MBytes
256 Mbit (8Mx8x4 banks) 512 MBytes 1 GByte
256 Mbit (4Mx16x4 banks) 256 MBytes 512 MBytes
512 Mbit (16Mx8x4 banks) 1 GByte 2 GBytes
512 Mbit (8Mx16x4 banks) 512 MBytes 1 GByte
Retaining Clip

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Connecting IDE and Floppy Disk Cables
1. Connecting the floppy disk ribbon cable into the motherboard. The side of the cable with the red
stripe needs to be inserted into the Pin1 side of the floppy disk connector.
2. Connecting the IDE ribbon cable into the motherboard. The side of the cable with the red stripe
should be inserted into Pin1 side of the IDE connector.
IDE Connectors
Red Stripe
to Pin1
Floppy Connector
Red Stripe
to Pin1

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Connect Floppy and IDE Drives
NOTE: If installing two IDE devices on the same ribbon cable, one device is to be set as “master” and the
second as “slave”. Please refer to IDE device manuals for master and slave settings.
1. Mount the desired drives into the case.
2. Connect the floppy disk ribbon cable and power cable into the device.
3. Connect the IDE ribbon cable and power cable into the device.
Power Cable
Floppy Disk Drive
Floppy Disk Ribbon Cable
Hard Disk Drive
Power Cable
IDE Ribbon Cable

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Installing Expansion Cards
1. Read the related expansion card’s installation instructions before inserting the expansion card into the
motherboard.
2. Remove the slot covers from the chassis case where the expansion cards will be placed.
3. Press the expansion card firmly into the expansion slot of the motherboard.
4. Secure the card with the screw provided.
5. Repeat same procedure when adding additional expansion cards.

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Connect the Power Supply Cables
NOTE: The ATX power connector is keyed for proper insertion.
1. Place the plastic clip of the power connector over the plastic tab on the motherboard power connector.
The plastic clip should lock into the plastic tab.
Power Supply Connector
Power Supply Connector

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I/O Back Panel Introduction
(1) PS/2 Keyboard and PS/2 Mouse Connector
This connector supports standard PS/2 keyboard and PS/2 mouse.
(2) Parallel Port and Serial Ports (COM1/COM2)
This connector supports 2 standard COM ports and 1 Parallel port.
Devices (i.e. printer) can be connected into the Parallel port.
Devices (i.e. mouse and modem etc. can be connected into the Serial ports.
1
2
3
4
PS/2 Mouse Connector (6 pin Female)
PS/2 Keyboard Connector (6 pin Female)
Parallel Port (25 pin Female)
COM 1 COM 2
Serial Ports (9 pin Male)
5

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I/O Back Panel Introduction
cont….
(3) USB Connector
Before connecting device(s) into the USB connections, determine if devices have a standard interface.
Make sure your computer Operating System (OS) supports the USB controller. If not, contact your OS
or device(s) vendors for more information.
(4) Game Port
This connector supports joystick, MIDI keyboard and other related audio devices.
(5) Audio Connectors
Once onboard audio driver has been installed, the speakers may be connected into the Line out jack,
audio devices such as CD-ROM etc., and a microphone into the MIC in jack.
USB 1
USB 2
Line out Line In MIC in

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13
Jumper Introduction
Jumper Settings
The following graphic shows the meaning of the jumper with cover and without cover.
PIN 1 PIN 1
OFF ON (1-2)
FWH Lock
This jumper allows you to set FWH lock.
Reference: JP2
Connector Type: 1 x 3
JP2 Description Jumper Placement
1-2
FWH Lock Put the jumper cover on pin1 and pin2.
2-3
FWH Unlock (Default) Put the jumper cover on pin2 and pin3.
BIOS Configuration
This jumper allows you to set CPU speed.
Reference: JP3
Connector Type: 1 x 3
JP3 Description Jumper Placement
1-2
Normal Mode (Default) Put the jumper cover on pin1 and pin2.
2-3
BIOS Conf. (save speed) Put the jumper cover on pin2 and pin3.
OPEN
BIOS Recovery Remove jumper from JP5.

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Jumper Introduction
cont….
Clear CMOS (Optional)
This jumper allows you to clear the content of the CMOS.
Reference: JP1
Connector Type: 1 x 3
JP1 Description Jumper Placement
1-2
Normal Put the jumper cover on pin1 and pin2.
2-3
Clear content of CMOS Put the jumper cover on pin2 and pin3.
Clear Password
This jumper allows you to clear the password of the BIOS.
Reference: JP4
Connector Type: 1 x 3
JP4 Description Jumper Placement
1-2
Normal (Default) Put the jumper cover on pin1 and pin2.
2-3
Clear BIOS password Put the jumper cover on pin2 and pin3.

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Jumper Introduction
cont….
Front Side USB Connector Pin Definition
J23
Front Side USB Connector Pin Definition
Pin Signal Name Description
1 V2+ Front Side USB Port2 VCC
2 V1+ Front Side USB Port1 VCC
3 USB2- Front Side USB Port2
Signal-
4 USB1- Front Side USB Port1
Signal-
5 USB2+ Front Side USB Port2
Signal+
6 USB1+ Front Side USB Port1
Signal+
7 GND2 Front Side USB Port2 GND
8 GND1 Front Side USB Port1 GND
9 NC No Connect
10 USBOC USB Over-Current Detect
USB1-
V1+V2+
USB2-
USB2+ USB1+
GND2 GND1
NC USBOC

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AMI® BIOS Setup
Entering Setup
To enter the setup menu, first power up the computer and press <Delete> key to enter the CMOS setup.
The Main Menu
When you enter the AMI® HIFLEX Setup Utility, the below Main Menu will appear. The Main menu allows you
to select and modify your computer system. To navigate through the menu, simply use the arrow keys to select
among the items and press <Enter> to accept or enter the sub-menu.
AMI HIFLEX SETUP UTILITY - VERSION 1.38
©2001 AMERICAN MEGATRENDS, INC. ALL RIGHTS RESERVED
NR115 BIOS Rev: 1.11
Standard CMOS Features
Advanced CMOS Features
Advanced Chipset Features
Power Management Setup
PCI / Plug and Play Setup
Peripheral Setup
Hardware Monitor Setup
Auto-Detect Hard Disks
Change User Password
Change Supervisor Password
Auto Configuration with Optimal Setting
Auto Configuration with Fail Safe Settings
Save Settings and Exit
Exit without Saving
Standard CMOS setup for changing time, date, hard disk type, etc.
ESC: Exit KL : Sel F2/F3: Color F10: Save and Exit