Supero SUPER S2DG2 User manual

®
SUPER S2DG2
SUPER S2DGU
SUPER S2DGE
SUPER S2DGR
USER’S AND BIOS
MANUAL
Revision 1.4
SUPER

The information in this User’s Manual has been carefully reviewed and is believed to be
accurate. The vendor assumes no responsibility for any inaccuracies that may be contained
in this document, makes no commitment to update or to keep current the information in this
manual, or to notify any person or organization of the updates. Please Note: For the
most up-to-date version of this manual, please see our web site at
www.supermicro.com.
SUPERMICRO COMPUTER reserves the right to make changes to the product described in
this manual at any time and without notice. This product, including software, if any, and
documentation may not, in whole or in part, be copied, photocopied, reproduced, translated or
reduced to any medium or machine without prior written consent.
IN NO EVENT WILL SUPERMICRO COMPUTER BE LIABLE FOR DIRECT, INDIRECT,
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR
INABILITY TO USE THIS PRODUCT OR DOCUMENTATION, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. IN PARTICULAR, THE VENDOR SHALL NOT HAVE
LIABILITY FOR ANY HARDWARE, SOFTWARE OR DATA STORED OR USED WITH THE
PRODUCT, INCLUDING THE COSTS OF THE REPAIRING, REPLACING, INTEGRATING,
INSTALLING OR RECOVERING SUCH HARDWARE, SOFTWARE OR DATA.
Unless you request and receive written permission from SUPERMICRO COMPUTER, you may
not copy any part of this document.
Information in this document is subject to change without notice. Other products and
companies referred to herein are trademarks or registered trademarks of their respective
companies or mark holders.
Copyright © 1999 by SUPERMICRO COMPUTER INC.
All rights reserved.
Printed in the United States of America.

Preface
About This Manual
This manual is written for system houses, PC technicians and
knowledgeable PC end users. It provides information for the installation and
use of the SUPER S2DG2/S2DGU/S2DGE/S2DGR motherboard. The SUPER
S2DG2/S2DGU/S2DGE/S2DGR supports Pentium II and III Xeon processors.
The Pentium II/III Xeon processor with the Dual Independent Bus Architecture
is based on the "Slot 2" infrastructure, which will provide the headroom for
future high-performance processors.
Manual Organization
Chapter 1, Introduction, describes the features, specifications and perfor-
mance of the SUPER S2DG2/S2DGU/S2DGE/S2DGR system board and pro-
vides detailed information about the chipset.
Refer to Chapter 2, Installation, for instructions on how to install the Pentium
II/III Xeon processor, the retention mechanism and the heat sink support.
This chapter also provides you with instructions for handling static-sensitive
devices. Read this chapter when you want to install DIMM modules and to
mount the system board in the chassis. Also refer to this chapter to connect
the floppy and hard disk drives, IDE interfaces, parallel port and serial ports
as well as the cables for the power supply, reset cable, Keylock/Power LED,
speaker and keyboard.
If you encounter any problems, see Chapter 3, Troubleshooting, which de-
scribes troubleshooting procedures for the video, the memory and the setup
configuration stored in memory. For quick reference, a general FAQ [Fre-
quently Asked Questions] section is provided. Instructions are also included
for technical support procedures, returning merchandise for service and for
BIOS upgrades using our BBS#.
See Chapter 4 for configuration data and BIOS features.
iii
Preface

S2DG2/S2DGU/S2DGE/S2DGR User’s Manual
Chapter 5 has information on running setup and includes the default settings
for Standard Setup, Advanced Setup, Chipset Function, Power Management,
PCI/PnP Setup and Peripheral Setup.
Appendix A offers information on BIOS error beep codes and messages.
Appendix B shows post diagnostic error messages.
iv

Table of Contents
Table of Contents
Preface
About This Manual ...................................................................................................... iii
Manual Organization................................................................................................... iii
Jumper Quick Reference........................................................................................... viii
Front Control Panel Headers...................................................................................... ix
Chapter 1: Introduction
1-1 Overview .......................................................................................................... 1-1
SUPER S2DG2 Image............................................................................. 1-2
SUPER S2DG2 Motherboard Layout ..................................................... 1-3
SUPER S2DGU Image ............................................................................ 1-4
SUPER S2DGU Motherboard Layout..................................................... 1-5
SUPER S2DGE Image ............................................................................ 1-6
SUPER S2DGE Motherboard Layout..................................................... 1-7
SUPER S2DGR Image ............................................................................ 1-8
SUPER S2DGR Motherboard Layout..................................................... 1-9
440GX AGP Chipset: System Block Diagram .................................... 1-10
Motherboard Features ........................................................................... 1-11
1-2 Chipset Overview.......................................................................................... 1-13
1-3 Slot 2 Architecture........................................................................................ 1-13
1-4 PC Health Monitoring................................................................................... 1-13
1-5 ACPI/PC 98 Features .................................................................................. 1-16
1-6 Power Supply Requirements....................................................................... 1-17
1-7 Super I/O ........................................................................................................ 1-18
1-8 AIC 7890 SCSI Controller ............................................................................ 1-19
1-9 AIC 7895 SCSI Controller ............................................................................ 1-19
1-10 AIC 7896 SCSI Controller ............................................................................ 1-20
Chapter 2: Installation
2-1 Static-Sensitive Devices................................................................................ 2-1
Precautions ............................................................................................... 2-1
Unpacking ................................................................................................. 2-1
2-2 Pentium II and III Xeon Processor Installation .......................................... 2-1
Removing the Pentium II/III Xeon Processor ...................................... 2-2
2-3 Explanation and Diagram of Jumper/Connector ........................................ 2-4
2-4 Changing the CPU Speed ............................................................................. 2-4
2-5 Mounting the Motherboard in the Chassis.................................................. 2-5
v

S2DG2/S2DGU/S2DGE/S2DGR User’s Manual
2-6 Connecting Cables ......................................................................................... 2-5
Power Supply Connectors ...................................................................... 2-5
Secondary Power Connector.................................................................. 2-5
Infrared Connector .................................................................................... 2-5
PW_ON Connector.................................................................................... 2-6
Reset Connector ...................................................................................... 2-6
Hard Drive LED ........................................................................................ 2-6
Keylock/Power LED Connector.............................................................. 2-6
Speaker Connector .................................................................................. 2-7
Power Save State Select........................................................................ 2-7
ATX PS/2 Keyboard and Mouse Ports ................................................. 2-7
Universal Serial Bus ................................................................................ 2-7
ATX Serial Ports ...................................................................................... 2-8
CMOS Clear.............................................................................................. 2-8
External Battery........................................................................................ 2-8
Wake-On-LAN........................................................................................... 2-8
Fan Connectors........................................................................................ 2-8
Chassis Intrusion ..................................................................................... 2-9
SLED Indicator .......................................................................................... 2-9
2-7 Installing DIMMs ............................................................................................. 2-9
DIMM Installation ..................................................................................... 2-9
2-8 Connecting the Parallel Port, FDD and HDD ........................................... 2-10
Parallel Port Connector......................................................................... 2-11
Floppy Connector................................................................................... 2-11
IDE Interfaces......................................................................................... 2-11
SCSI Connectors .................................................................................... 2-12
Ultra2 LVD/SE SCSI Connector............................................................ 2-13
AGP Port ................................................................................................. 2-14
Chapter 3: Troubleshooting
3-1 Troubleshooting Procedures ......................................................................... 3-1
Before Power On...................................................................................... 3-1
Troubleshooting Flowchart...................................................................... 3-1
No Power................................................................................................... 3-2
No Video.................................................................................................... 3-2
Memory Errors.......................................................................................... 3-2
Losing the System’s Setup Configuration ............................................ 3-3
3-2 Technical Support Procedures ..................................................................... 3-3
vi

Table of Contents
3-3 Frequently Asked Questions......................................................................... 3-4
3-4 Returning Merchandise for Service ............................................................. 3-7
Chapter 4: AMIBIOS
4-1 Introduction....................................................................................................... 4-1
4-2 BIOS Features ................................................................................................. 4-2
BIOS Configuration Summary Screen ................................................... 4-3
AMIBIOS Setup ......................................................................................... 4-3
Chapter 5: Running Setup
5-1 Setup ................................................................................................................. 5-1
5-1-1 Standard CMOS Setup .................................................................. 5-1
5-1-2 Advanced CMOS Setup................................................................. 5-3
5-1-3 Advanced Chipset Setup ............................................................... 5-7
5-1-4 Power Management Setup .......................................................... 5-13
5-1-5 PCI/PnP Setup.............................................................................. 5-15
5-1-6 Peripheral Setup ........................................................................... 5-17
5-2 Auto Detect Hard Disks................................................................................ 5-19
5-3 Change User/Supervisor Password ............................................................ 5-20
5-4 Change Language Setting............................................................................ 5-20
5-5 Default Settings ............................................................................................. 5-21
5-4-1 Auto Configuration with Optimal Settings................................. 5-21
5-4-2 Auto Configuration with Fail-Safe Settings............................... 5-21
Appendices:
Appendix A: BIOS Error Beep Codes and Messages ......................................... A-1
Appendix B: AMIBIOS Post Diagnostic Error Messages .................................... B-1
vii

S2DG2/S2DGU/S2DGE/S2DGR User’s Manual
viii
S2DG2/S2DGR S2DGU/S2DGE*
Jumpers
JB1, JB2, JB3, JB4
JBT1
JP20
BZ_ON
JA5, JA6, JA7
**
JOH
J36
Connectors
J17
J18
J19
J20
J21
J32
J34
JA1, JA2 (S2DG2)
JA1, JA2 (S2DGR)
JA3
JBT2
JF1
JF2
JL1
SLED
JT1/JT1A
JT2/JT2A
JT3/JT3A
WOL
Function Page
CPU Core/Bus Ratio Selection 2-4
CMOS Clear 2-8
Power Save State 2-7
Overheat Alarm Enable 1-5
SCSI Termination
(default on = terminated) 1-3,9
Overheat LED Header 1-3,9
Secondary Power Connector 2-5
Function Page
USB 2-7
USB 2-7
Parallel Port 2-11
COM 1 2-8
COM 2 2-8
ATX Power Connector 2-5
PS/2 KB and Mouse 2-7
Ultra2 LVD/SE SCSI 2-13
UW SCSI 2-12
SCSI 2-12
External Battery 2-8
IDE Hard Drive LED 2-6
Keylock 2-6
Speaker 2-7
IR Connector 2-5
PW_ON 2-6
Reset 2-6
Chassis Intrusion 2-9
SCSI LED 2-9
CPU 1 Fan 2-8
CPU 2 Fan 2-8
Thermal Control Fan 2-8
Wake-On-LAN 2-8
Jumpers
JB1, JB2, JB3, JB4
JBT1
JP20
S-TERM
JOH
BZ_ON
J36
Connectors
J17
J18
J19
J20
J21
J32
J34
JA1
JA2
JA4
JBT2
JF1
JF2
JL1
SLED
JT1/JT1A
JT2/JT2A
JT3/JT3A
WOL
Function
CPU Core/Bus Ratio Selection
CMOS Clear
Power Save State
SCSI Termination
(default on = terminated)
Overheat LED Header
Overheat Alarm Enable
Secondary Power Connector
Function
USB
USB
Parallel Port
COM 1
COM 2
ATX Power Connector
PS/2 KB and Mouse
Ultra2 LVD/SE SCSI
UW SCSI
SCSI
External Battery
IDE Hard Drive LED
Keylock
Speaker
IR Connector
PW_ON
Reset
Chassis Intrusion
SCSI LED
CPU 1 Fan
CPU 2 Fan
Thermal Control Fan
Wake-On-LAN
* SCSI jumpers and connectors do not apply to the S2DGE.
** S2DG2: Jumping JA5 terminates SCSI connector JA1.
Jumping JA6 terminates SCSI connector JA3.
Jumping JA7 terminates SCSI connector JA2.
S2DGR: Jumping JA5 terminates SCSI connectors JA1 and JA3.
Jumping JA6 terminates SCSI connector JA2.
(JA7 is not used for the S2DGR.)
Jumper Quick Reference

ix
Front Control Panel
Front Control Panel Headers
See pages 2-5 through 2-7 for
pin definitions.
Keyboard
lock
Speaker
IR Con
Power On
X
Reset
JF2 JF1
X
Power
LED
11
Hard
Drive LED

x
Notes
Preface

Chapter 1: Introduction
1-1
Chapter 1
Introduction
1-1 Overview
The SUPER S2DG2/S2DGU/S2DGE/S2DGR supports dual Pentium II Xeon
and dual Pentium III Xeon processors. All four motherboards are based on Intel’s
440GX chip set, which supports a 100 MHz system bus speed, an Accelerated
Graphics Port (AGP), Wake-on-LAN, SDRAM, concurrent PCI and a 33 MB/s
Ultra DMA burst data transfer rate.
While all of the motherboards are the ATX form factor, the S2DG2, S2DGU and
S2DGE have 5 PCI and 2 ISA slots (with one shared). The S2DGR has 4 PCI
and 2 ISA slots (with one shared). All have an AGP port and can accommodate
up to 2 GB unbuffered SDRAM or registered SDRAM memory in 4 168-pin DIMM
sockets.
AGP reduces contention between the CPU and I/O devices by broadening the
graphics bandwidth to memory. It delivers a maximum of 532 MB/s in the 2x
transfer mode, which is quadruple the PCI speed!
Wake-On-LAN allows for the remote network management and configuration of
the PC, even in off-hours when the PC is turned off. This reduces the complexity
of managing the network.
Other features that maximize customer satisfaction and simplicity in managing
the computer are its support for the PC 98-ready and and the Advanced Configu-
ration and Power Interface (ACPI) standards. With PC Health Monitoring, you
can protect your system from problems before they even occur.
All motherboards include the following I/O: 2 EIDE ports, a floppy port, an ECP/
EPP supported parallel port, PS/2 mouse and PS/2 keyboard ports, 2 serial
ports, an infrared port and 2 USB ports. The S2DGR has an integrated onboard
Adaptec 7895 dual UW SCSI controller. The dual channels enable a data transfer
rate of 40 MB/s per channel and an optional RAID II port (ARO-1130CA/SA). The
S2DG2 has the onboard Adaptec 7896 controller for Ultra2 LVD (Low Voltage
Device) SCSI, which enables a data transfer rate of 80 MB/s per channel and an
optional RAID III port (ARO-1130C). In addition, this motherboard has an onboard
RAID port to support the Adaptec ARO-1130C RAIDport III card for increased I/
O performance and fault tolerance. The S2DGU provides an onboard Adaptec
7890 Ultra2 LVD SCSI controller, which enables data transfer rates of up to 80
MB/s, and an optional RAID III port (ARO-1130C).

SUPER S2DG2/S2DGU/S2DGE/S2DGR Manual
1-2
SUPER S2DG2
Figure 1-1. SUPER S2DG2 Motherboard Image

Chapter 1: Introduction
1-3
Figure 1-2. SUPER S2DG2 Motherboard Layout
12"
J21
COM2
J20
COM1
J14
J13
J34
PS/2 KB
PS/2
MOUSE
J9
J11
J12
J10
PW_ON
RESET
JF1
IDE LED/KEYLOCK/SPEAKER
IR CON
JF2
U38
U14
J8
J17, J18
USB
U2
SCSI
JA1
BIOS
BT2
BATTERY
+
-
UA12
JA4
RAID PORT
U48
JL1
AGPP
ORT
U37
U15
JP11
Ultra2 LVD/SE
Channel A
PIIX4
GX
J19
Parallel
Port
J35
1JL2
1JTM
JB4
JB3
JB2
JB1
1
WOL
J15
1
FLOPPY
J22
JBT1
JBT2
12"
10.65"
10.65"
1
JA2
BZ
PCI 4
PCI 5
PCI 3
PCI 2
PCI 1
SBLINK
U58
U18
U19
1
JP20
Bank0
Bank1
Bank2
Bank3
JT2
JT1
1
J1
J2
ATX POWER (A)
JT2A
JT1A
1
1
1
1
J32A
1
JA3
1
JT3A
JT3
1
IDE 2
IDE1
J16
OSC1
JPR1
PWR_SEC
J7
J5
J4
J6
1
1
1
JOH
Overheat
LED
Chassis Intrusion
SLED
1
BZ_ON
J36
®
1
——–—— Manufacturer Settings —–———
JBT1: 1-2 (default)
2-3 CMOS Clear
*To clear CMOS completely,
disconnect the power source.
JL1: OFF (default)
ON (intrusion)
JP11: 1-2 = 100 MHz
2-3 = 66 MHz
JP20: 1-2 PIIX CTL PD State
2-3 BIOS CTL PD State (default)
WOL: Wake-On-LAN
JA5: SCSI Termination for JA1
JA6: SCSI Termination for JA3
JA7: SCSI Termination for JA2
——–———————–——–—–——–——–—
Note: JA3 is optional.
Note: To enable the overheat buzzer, place a jumper
on BZ_ON.
ATX POWER (B)
J32B
1
1
1
1
1
JA5
JA7
JA6
1
1
1
SUPER S2DG2
Ultra2 LVD/SE
Channel B
————— CPU Core/Bus Ratio –—————
JB1 JB2 JB3 JB4
x3 ON OFF ON ON
x3.5 OFF OFF ON ON
x4 ON ON OFF ON
x4.5 OFF ON OFF ON
x5 ON OFF OFF ON
x5.5 OFF OFF OFF ON
x6 ON ON ON OFF
x6.5 OFF ON ON OFF
x7 ON OFF ON OFF
x7.5 OFF OFF ON OFF
——–—–————————————————
Note: Some CPU Core/Bus ratios cannot be selected
with jumpers for processors that have fixed ratios.

SUPER S2DG2/S2DGU/S2DGE/S2DGR Manual
1-4
SUPER S2DGU
Figure 1-3. SUPER S2DGU Motherboard Image

Chapter 1: Introduction
1-5
8.7"
SUPER S2DGU
Figure 1-4. SUPER S2DGU Motherboard Layout
J21
COM2
J20
COM1
J14
J13
J34
PS/2 KB
PS/2
MOUSE
J9
J11
J12
J10
PW_ON RESET
JF1
IDE LED/KEYLOCK/SPEAKER
IR CON
JF2
U38
U14
J8
J17, J18
USB
U2
SCSI
JA1
BIOS
BT2
BATTERY
+
-
UA12
JA3
RAID PORT
U48
JL1
AGPP
ORT
U37
U15
JP11
UW SCSI
Ultra2 LVD/SE
——–—— Manufacturer Settings —–———
JBT1: 1-2 (default)
2-3 CMOS Clear
*To clear CMOS completely,
disconnect the power source.
JL1: OFF (default)
ON (intrusion)
JP11: 1-2 = 100 MHz
2-3 = 66 MHz
JP20: 1-2 PIIX CTL PD State
2-3 BIOS CTL PD State (default)
WOL: Wake-On-LAN
S-TERM: On: SCSI Termination Enable
Off: Termination Disable
——–———————–——–—–——–——–—
PIIX4
GX
J19
Parallel
Port
J35
1 JL2
1JTM
JB4
JB3
JB2
JB1
1
WOL
J15
1
FLOPPY
J22
JBT1
JBT2
S-TERM
12"
10.65"
9.65"
1
JA2
BZ
PCI 4
PCI 5
PCI 3
PCI 2
PCI 1
SBLINK
U58
U18
U19
1
JP20
Bank0
Bank1
Bank2
Bank3
JT2
JT1
1
J1
J2
ATX POWER
JT2A
JT1A
1
1
1
1
J32
1
JA4
1
JT3A
JT3
1
IDE 2
IDE 1
J16
OSC1
JPR1
PWR_SEC
J7
J5
J4
J6
1
1
1
JOH
Overheat
LED
Chassis
Intrusion
SLED
1
BZ_ON
J36
Note: To enable the overheat buzzer, place a jumper
on BZ_ON.
Note: JA3 is optional.
®
1
————— CPU Core/Bus Ratio –—————
JB1 JB2 JB3 JB4
x3 ON OFF ON ON
x3.5 OFF OFF ON ON
x4 ON ON OFF ON
x4.5 OFF ON OFF ON
x5 ON OFF OFF ON
x5.5 OFF OFF OFF ON
x6 ON ON ON OFF
x6.5 OFF ON ON OFF
x7 ON OFF ON OFF
x7.5 OFF OFF ON OFF
——–—–————————————————
Note: Some CPU Core/Bus ratios cannot be selected
with jumpers for processors that have fixed ratios.

SUPER S2DG2/S2DGU/S2DGE/S2DGR Manual
1-6
SUPER S2DGE
Figure 1-5. SUPER S2DGE Motherboard Image

Chapter 1: Introduction
1-7
Figure 1-6. SUPER S2DGE Motherboard Layout
8.7"
J21
COM2
J20
COM1
J14
J13
J34
PS/2 KB
PS/2
MOUSE
J9
J11
J12
J10
PW_ON
RESET
JF1
IDE LED/KEYLOCK/SPEAKER
IR CON
JF2
U38
U14
J8
J17, J18
USB
U2
BIOS
BT2
BATTERY
+
-
UA12
JA3
RAID PORT
U48
JL1
AGPP
ORT
U37
U15
JP11
PIIX4
GX
J19
Parallel
Port
J35
1JL2
1JTM
JB4
JB3
JB2
JB1
1
WOL
J15
FLOPPY
J22
JBT1
JBT2
10.65"
9.65"
BZ
PCI 4
PCI 5
PCI 3
PCI 2
PCI 1
SBLINK
U58
U18
U19
1
JP20
Bank0
Bank1
Bank2
Bank3
JT2
JT1
1
J1
J2
ATX POWER
JT2A
JT1A
1
1
1
1
J32
1
JT3A
JT3
1
IDE 2
IDE1
J16
OSC1
JPR1
PWR_SEC
J7
J5
J4
J6
1
1
1
JOH
Overheat
LED
Chassis
Intrusion
1
BZ_ON
J36
®
1
SUPER S2DGE
——–—— Manufacturer Settings —–———
JBT1: 1-2 (default)
2-3 CMOS Clear
*To clear CMOS completely,
disconnect the power source.
JL1: OFF (default)
ON (intrusion)
JP11: ON = 66 MHz
OFF = 100 MHZ
JP20: 1-2 PIIX CTL PD State
2-3 BIOS CTL PD State (default)
WOL: Wake-On-LAN
——–———————–——–—–——–——–—
Note: To enable the overheat buzzer, place a jumper
on BZ_ON.
12"
1
————— CPU Core/Bus Ratio –—————
JB1 JB2 JB3 JB4
x3 ON OFF ON ON
x3.5 OFF OFF ON ON
x4 ON ON OFF ON
x4.5 OFF ON OFF ON
x5 ON OFF OFF ON
x5.5 OFF OFF OFF ON
x6 ON ON ON OFF
x6.5 OFF ON ON OFF
x7 ON OFF ON OFF
x7.5 OFF OFF ON OFF
——–—–————————————————
Note: Some CPU Core/Bus ratios cannot be selected
with jumpers for processors that have fixed ratios.

SUPER S2DG2/S2DGU/S2DGE/S2DGR Manual
1-8
SUPER S2DGR
Figure 1-7. SUPER S2DGR Motherboard Image

Chapter 1: Introduction
1-9
®
J21
COM2
J20
COM1
J34
PS/2 KB
PS/2
MOUSE
J9
J11
J12
J10
PW_ON
RESET
JF1
IDE LED/KEYLOCK/SPEAKER
IR CON
JF2
U38
U14
J8
J17, J18
USB
U2
SCSI
BIOS
WOL
UA1
JA4
PCI 1
PCI 2
PCI 3
PCI 4
U48
AGPP
ORT
U37
U15
UW SCSI
JTM
PIIX4
GX
J19
Parallel
Port
Figure 1-8. SUPER S2DGR Motherboard Layout
Note: To enable the overheat buzzer, place a jumper
on BZ_ON.
12"
9.6"
10.125"
UW SCSI
J13
J14
SBLINK
1
RAID PORT
SUPER S2DGR
JL2
JL1
1
Bank0
Bank1
Bank2
Bank3
JB2
JB3
JB4
JB1
JT2
JT2
JT1A
1
1
JP12
11
JP13
J3
J1
J2
JA7
JA5
JP20 1
BT2
-
+
1SCSI LED
JBT2
JBT1
1
BATTERY
J5
J6
J7
J4
111
J22
6.0"
ATX POWER
JA3
1
JA1
JA2
1
J15
J16
FLOPPY
JP11
Chassis Intrusion
BZ_ON
1
1
JT2A
JT1
JT3
JTA31
1
1
PWR_SEC
J36
J32
1
1
1
JOH1
——–—— Manufacturer Settings —–———
JBT1: 1-2 (default)
2-3 CMOS Clear
*To clear CMOS completely,
disconnect the power source.
JL1: OFF (default)
ON (intrusion)
JP11: ON = 66 MHz
OFF = 100 MHZ
JP20: 1-2 PIIX CTL PD State
2-3 BIOS CTL PD State (default)
WOL: Wake-On-LAN
JA5: SCSI Termination for JA1 and JA3
JA6: SCSI Termination for JA2
——–———————–——–—–——–——–—
1
IDE2
IDE1
Note: Some CPU Core/Bus ratios cannot be selected
with jumpers for processors that have fixed ratios.
————— CPU Core/Bus Ratio –—————
JB1 JB2 JB3 JB4
x3 ON OFF ON ON
x3.5 OFF OFF ON ON
x4 ON ON OFF ON
x4.5 OFF ON OFF ON
x5 ON OFF OFF ON
x5.5 OFF OFF OFF ON
x6 ON ON ON OFF
x6.5 OFF ON ON OFF
x7 ON OFF ON OFF
x7.5 OFF OFF ON OFF
——–—–————————————————

SUPER S2DG2/S2DGU/S2DGE/S2DGR Manual
1-10
CPU
440GX
CPU
AGP
Port
IO
APIC
PIIX4
Power
Management
SDRAM
Host Bus
PCI Slots
SMBus
USB
Ports
USB
IDE Ports
ISA Slots
BIOS
SIO
SCSI
Figure 1-9. 440GX AGP Chipset:
System Block Diagram (Dual Processors)
NOTE: This is a general block diagram and may not
represent the number of slots/CPUs on your motherboard.
See the following page for the actual specifications of each
motherboard.