ASROCK K7S41 User manual

1
K7S41
K7S41GX
User Manual
Version 1.0
Published December 2003
Copyright©2003 ASRock INC. All rights reserved.

2
Copyright Notice:
No part of this manual may be reproduced, transcribed, transmitted, or translated in
any language, in any form or by any means, except duplication of documentation by
the purchaser for backup purpose, without written consent of ASRock Inc.
Products and corporate names appearing in this manual may or may not be regis-
tered trademarks or copyrights of their respective companies, and are used only for
identification or explanation and to the owners’ benefit, without intent to infringe.
Disclaimer:
Specifications and information contained in this manual are furnished for informa-
tional use only and subject to change without notice, and should not be constructed
as a commitment by ASRock. ASRock assumes no responsibility for any errors or
omissions that may appear in this manual.
With respect to the contents of this manual, ASRock does not provide warranty of
any kind, either expressed or implied, including but not limited to the implied warran-
ties or conditions of merchantability or fitness for a particular purpose.
In no event shall ASRock, its directors, officers, employees, or agents be liable for
any indirect, special, incidental, or consequential damages (including damages for
loss of profits, loss of business, loss of data, interruption of business and the like),
even if ASRock has been advised of the possibility of such damages arising from any
defect or error in the manual or product.
ASRock Website: http://www.asrock.com

3
Contents
1 Introduction.................................................... 4
1.1 Package Contents ........................................................... 4
1.2 Specifications ................................................................. 5
1.3 Motherboard Layout (K7S41)......................................... 7
1.4 Motherboard Layout (K7S41GX) ................................... 8
1.5 ASRock I/OTM (K7S41 / K7S41GX) ................................. 9
2 Installation ...................................................... 10
Pre-installation Precautions .................................................. 10
2.1 CPU Installation ............................................................... 11
2.2 Installation of CPU Fan and Heatsink .............................. 11
2.3 Installation of Memory Modules (DIMM) .......................... 12
2.4 Expansion Slots (PCI, AMR, and AGP Slots) .................. 13
2.5 Jumpers Setup ................................................................ 14
2.6 Connectors ..................................................................... 16
3 BIOS Setup ...................................................... 19
3.1 BIOS Setup Utility ............................................................ 19
3.1.1 BIOS Menu Bar ..................................................... 19
3.1.2 Legend Bar ........................................................... 19
3.2 Main Menu ....................................................................... 20
3.3 Advanced, Security, Power, Boot, and Exit Menus ...... 22
4 Software Support ........................................... 23
4.1 Installing Operating System ............................................ 23
4.2 Support CD Information ................................................... 23
4.2.1 Running Support CD ............................................. 23
4.2.2 Drivers Menu ........................................................ 23
4.2.3 Utilities Menu ......................................................... 23
4.2.4 ASRock “PC-DIY Live Demo” Program ................. 23
4.2.5 Contact Information ............................................... 23
Appendix ........................................................... 24
1. Advanced BIOS Setup Menu.......................................... 24
2. Security Setup Menu ...................................................... 28
3. Power Setup Menu ......................................................... 29
4. Boot Setup Menu ............................................................ 30
5. Exit Menu ......................................................................... 31

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Chapter 1 Introduction
Thank you for purchasing ASRock K7S41 / K7S41GX motherboard, a reliable moth-
erboard produced under ASRock’s consistently stringent quality control. It delivers
excellent performance with robust design conforming to ASRock’s commitment to
quality and endurance.
Chapter 1 and 2 of this manual contain introduction of the motherboard and step-by-
step installation guide. Chapter 3 and 4 contain basic BIOS setup and support CD
information. More information of advanced BIOS setup is offered on page 24 for
advanced users’ reference.
Because the motherboard specifications and the BIOS software
might be updated, the content of this manual will be subject to
change without notice. In case any modifications of this manual
occur, the updated version will be available on ASRock website
without further notice. You may find the latest memory and CPU
support lists on ASRock website as well.
ASRock website http://www.asrock.com
1.1 Package Contents
ASRock K7S41 or K7S41GX Motherboard
(Micro ATX Form Factor: 9.6-in x 7.8-in, 24.4 cm x 19.8 cm)
ASRock K7S41 / K7S41GX Quick Installation Guide
ASRock K7S41 / K7S41GX Support CD
One 80-conductor Ultra ATA 66/100/133 IDE Ribbon Cable
One Ribbon Cable for a 3.5-in Floppy Drive
One ASRock I/OTM Shield
One COM Port Bracket
One ASRock MR Card (Optional)

5
1.2 Specifications
Platform: Micro ATX Form Factor: 9.6-in x 7.8-in, 24.4 cm x 19.8 cm
CPU: Supports Socket A (462 pins) for
AMDAthlonTM XP / DuronTM processor
Chipsets: North Bridge (K7S41):
SiS 741, FSB@400 MHz, AGP 8X/4X
North Bridge (K7S41GX):
SiS 741GX, FSB@333 MHz, AGP 8X/4X
South Bridge:
SiS 963L, supports USB 2.0, ATA 133
Memory: 2 DDR DIMM Slots: DDR1 and DDR2
K7S41:
PC3200 (DDR400) / PC2700 (DDR333) / PC2100 (DDR266),
Max. 2GB;
K7S41GX:
PC2700 (DDR333) / PC2100 (DDR266), Max. 2GB
IDE: IDE1: ATA 133 / Ultra DMA Mode 6,
IDE2: ATA 133 / Ultra DMA Mode 6,
Supports up to 4 IDE devices
Floppy Port: Supports up to 2 floppy disk drives
Audio: 5.1 channels AC’97 Audio
LAN: Speed: 802.3u (10/100 Ethernet), supports Wake-On-LAN
Hardware Monitor: CPU temperature sensing,
Chassis temperature sensing,
CPU overheat shutdown to protect CPU life
(ASRock U-COP)(see CAUTION 1),
CPU fan tachometer, Chassis fan tachometer,
Voltage monitoring: +12V, +5V, +3V, Vcore
PCI slots: 2 slots with PCI Specification 2.2
AGP slot: 1 AGP slot, supports 1.5V, 8X/4X AGP card (see CAUTION 2)
AMR slot: 1 slot, supports ASRock MR card (Optional)
USB 2.0: 6 USB 2.0 ports:
includes 4 default USB 2.0 ports on the rear panel,
plus one connector to support 2 additional USB 2.0 ports
(see CAUTION 3)
ASRock I/OTM:1 PS/2 mouse port, 1 PS/2 keyboard port,
1 VGA port, 1 parallel port: ECP/EPP support,
1 RJ 45 port, 4 default USB 2.0 ports,
1 Game port,
Audio Jack: Line Out / Line In / Microphone

6
BIOS: AMI legal BIOS, “Plug and Play” support,
ACPI 1.1 compliance wake up events,
SMBIOS 2.3.1 support,
CPU frequency stepless control
(only for advanced users’ reference, see CAUTION 4)
OS: Microsoft® Windows® 98 SE / ME / 2000 / XP compliant
CAUTION!
1. While CPU overheat is detected, the system will automatically shutdown.
Please check if the CPU fan on the motherboard functions properly before
you resume the system. To improve heat dissipation, remember to spray
thermal grease between the CPU and the heatsink when you install the PC
system.
2. Do NOT use a 3.3V AGP card on the AGP slot of this motherboard!
It may cause permanent damage!
3. Power Management for USB 2.0 works fine under Microsoft®Windows®
XP SP1/2000 SP4. It may not work properly under Microsoft®Windows®
98/ME. Please refer to Microsoft®official document at
http://www.microsoft.com/whdc/hwdev/bus/USB/USB2support.mspx
4. Although this motherboard offers stepless control, it is not recommended
to perform over clocking. Frequencies other than the recommended CPU
bus frequencies may cause the instability of the system or damage the
CPU. The CPU host frequency of this motherboard is determined by the
jumper-setting. You must set the FSB jumper according to your AMD CPU
before you use the “Manual” option as the FSB setting in BIOS setup to
perform over clocking. Please check page 24 for details.

7
`
K7S41
USB 2.0
5.1CH
AMR1
ATXPWR1
IDE2 IDE1
HDLED RST
PLED PWRBTN
1
PAN EL 1
SPEAKER1
1
CHA_FAN1
CMOS
Battery
USB45
1
CLRCMOS1
CLRCMOS2
FLOPPY1
IR1
1
PCI 2
PCI 1
1.5V_AGP1
Super
I/O
2MB
BIOS
21
1
AUDIO1
JR1 JL1
1
COM1
22
23
24
25
AUDIO
CODEC
26
28
PS2_USB_PWR1
1
CPU_FAN1
LAN
PHY
DDR1 (64/72 bit, 184-pin module)
DDR2 (64/72 bit, 184-pin module)
SiS
963L
SiS
741
Chipset
AGP 8X
ATA133
USB 2.0
T: USB2
B: USB3
USB 2.0
T: USB0
B: USB1
Top:
RJ-45
PARALLEL PORT
VGA1
FSB_SEL1
1
1
FSB_SEL0
1FSB_SEL2
1
1
1
1
FID1
FID2
FID3
FID4
FID0
1
PS2
Mouse
PS2
Keyboard
GAME PORT
Line
Out
Line
In
Mic
In
1
PWR_LED1
19.8cm (7.8-in)
24.4cm (9.6-in)
1245
36
7
8
9
10
11
12
13
14
151617
18
1920
27
29
30
FSB400
DDR400
1.3 Motherboard Layout (K7S41)
1 PS2_USB_PWR1 Jumper 16 Chassis Speaker Connector (SPEAKER 1)
2 CPU Fan Connector (CPU_FAN1) 17 Floppy Connector (FLOPPY1)
3 CPU Socket 18 USB 2.0 Connector (USB45, Blue)
4 North Bridge Controller 19 Infrared Module Connector (IR1)
5 184-pin DDR DIMM Slots (DDR 1- 2) 20 AMR Slot (AMR1)
6 ATX Power Connector (ATXPWR1) 21 Flash Memory
7 Secondary IDE Connector (IDE2, Black) 22 Serial Port Connector (COM1)
8 Primary IDE Connector (IDE1, Blue) 23 JL1 Jumper
9 AGP Slot (1.5V_AGP1) 24 JR1 Jumper
10 South Bridge Controller 25 Front Panel Audio Connector (AUDIO1)
11 Clear CMOS (CLRCMOS1, solder points) 26 PCI Slots (PCI 1- 2)
12 Clear CMOS (CLRCMOS2, 2-pin jumper) 27 FSB Select Jumpers (FSB_SEL0/FSB_SEL1/FSB_SEL2)
13 Chassis Fan Connector (CHA_FAN1) 28 Internal Audio Connector: CD1 (Black)
14 Power LED Connector (PWR_LED1) 29 Internal Audio Connector: AUX1 (White)
15 System Panel Connector (PANEL1) 30 FID Jumpers (FID0, FID1, FID2, FID3, FID4)

8
`
K7S41GX
USB 2.0
5.1CH
AMR1
ATXPWR1
IDE2 IDE1
HDLED RST
PLED PWRBTN
1
PANEL 1
SPEAKER1
1
CHA_FAN1
CMOS
Battery
USB45
1
CLRCMOS1
CLRCMOS2
FLOPPY1
IR1
1
PCI 2
PCI 1
1.5V_AGP1
Super
I/O
2MB
BIOS
21
1
AUDIO1
JR1 JL1
1
COM1
22
23
24
25
AUDIO
CODEC
26
28
PS2_USB_PWR1
1
CPU_FAN1
LAN
PHY
DDR1 (64/72 bit, 184-pin module)
DDR2 (64/72 bit, 184-pin module)
SiS
963L
SiS
741GX
Chipset
AGP 8X
ATA133
USB 2.0
T: US B 2
B: USB3
USB 2.0
T: US B 0
B: USB1
Top:
RJ-45
PARALLEL PORT
VGA1
FSB_SEL1
1
1
FSB_SEL0
1
1
1
1
FID1
FID2
FID3
FID4
FID0
1
PS2
Mouse
PS2
Keyboard
GAME PORT
Line
Out
Line
In
Mic
In
1
PWR_LED1
19.8cm (7.8-in)
24.4cm (9.6-in)
1245
36
7
8
9
10
11
12
13
14
151617
18
1920
27
29
30
1.4 Motherboard Layout (K7S41GX)
1 PS2_USB_PWR1 Jumper 16 Chassis Speaker Connector (SPEAKER 1)
2 CPU Fan Connector (CPU_FAN1) 17 Floppy Connector (FLOPPY1)
3 CPU Socket 18 USB 2.0 Connector (USB45, Blue)
4 North Bridge Controller 19 Infrared Module Connector (IR1)
5 184-pin DDR DIMM Slots (DDR 1- 2) 20 AMR Slot (AMR1)
6 ATX Power Connector (ATXPWR1) 21 Flash Memory
7 Secondary IDE Connector (IDE2, Black) 22 Serial Port Connector (COM1)
8 Primary IDE Connector (IDE1, Blue) 23 JL1 Jumper
9 AGP Slot (1.5V_AGP1) 24 JR1 Jumper
10 South Bridge Controller 25 Front Panel Audio Connector (AUDIO1)
11 Clear CMOS (CLRCMOS1, solder points) 26 PCI Slots (PCI 1- 2)
12 Clear CMOS (CLRCMOS2, 2-pin jumper) 27 FSB Select Jumpers (FSB_SEL0/FSB_SEL1)
13 Chassis Fan Connector (CHA_FAN1) 28 Internal Audio Connector: CD1 (Black)
14 Power LED Connector (PWR_LED1) 29 Internal Audio Connector: AUX1 (White)
15 System Panel Connector (PANEL1) 30 FID Jumpers (FID0, FID1, FID2, FID3, FID4)

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1.5 ASRock I/OTM (K7S41 / K7S41GX)
1 Parallel Port 6 Line Out (Lime)
2 RJ-45 Port 7 USB 2.0 Ports
3 Game Port 8 VGA Port
4 Microphone (Pink) 9 PS/2 Keyboard Port (Purple)
5 Line In (Light Blue) 10 PS/2 Mouse Port (Green)

10
Chapter 2 Installation
K7S41 / K7S41GX is a Micro ATX form factor (9.6-in x 7.8-in, 24.4 cm x 19.8 cm)
motherboard. Before you install the motherboard, please study the configura-
tion of your chassis to ensure that the motherboard fits into it.
Pre-installation Precautions
Take note of the following precautions before you install motherboard compo-
nents or change any motherboard settings.
1. Unplug the power cord from the wall socket before touching any component.
2. To avoid damaging the motherboard components due to static electricity,
NEVER place your motherboard directly on the carpet or the like. Also re-
member to use a grounded wrist strap or touch a safety grounded object
before you handle components.
3. Hold components by the edges and do not touch the ICs.
4. Whenever you uninstall any component, place it on a grounded antistatic
pad or in the bag that comes with the component.
Before you install or remove any component, ensure that the
power is switched off or the power cord is detached from the
power supply. Failure to do so may cause severe damage to
the motherboard, peripherals, and/or components.

11
2.1 CPU Installation
Step 1. Unlock the socket by lifting the lever up to a 90oangle.
Step 2. Position the CPU directly above the socket such that its marked corner
matches the base of the socket lever.
Step 3. Carefully insert the CPU into the socket until it fits in place.
The CPU fits only in one correct orientation. DO NOT force the
CPU into the socket to avoid bending of the pins.
Step 4. When the CPU is in place, press it firmly on the socket while you push
down the socket lever to secure the CPU. The lever clicks on the side tab
to indicate that it is locked.
2.2 Installation of CPU Fan and Heatsink
This motherboard adopts 462-pin CPU socket to support AMDAthlon
XP / Duron CPU. It requires larger heatsink and cooling fan to dissi-
pate heat. You also need to spray thermal grease between the CPU
and the heatsink to improve heat dissipation. Make sure that the CPU
and the heatsink are securely fastened and in good contact with
each other. Then connect the CPU fan to the CPU_FAN connector
(CPU_FAN1, see page 7/page 8, No. 2). For proper installation,
please kindly refer to the instruction manuals of the CPU fan and the
heatsink.
STEP 1:
Lift Up The Socket Lever
STEP 2/STEP 3:
Match The CPU Marked Corner
to The Socket Marked Corner
STEP 4:
Push Down And Lock
TheSocketLever
Lever 90° Up
CPU Marked Corner
Socket Marked Corner

12
2.3 Installation of Memory Modules (DIMM)
K7S41 / K7S41GX motherboard provides two 184-pin DDR (Double Data Rate) DIMM
slots.
Please make sure to disconnect power supply before adding or
removing DIMMs or the system components.
Step 1. Unlock a DIMM slot by pressing the retaining clips outward.
Step 2. Align a DIMM on the slot such that the notch on the DIMM matches the break
on the slot.
The DIMM only fits in one correct orientation. It will cause
permanent damage to the motherboard and the DIMM if you
force the DIMM into the slot at incorrect orientation.
Step 3. Firmly insert the DIMM into the slot until the retaining clips at both ends fully
snap back in place and the DIMM is properly seated.
notch
break
notch
break

13
2.4 Expansion Slots (PCI, AMR, and AGP Slots)
There are 2 PCI slots, 1 AMR slot, and 1 AGP slot on K7S41 / K7S41GX motherboard.
PCI slots: PCI slots are used to install expansion cards that have the 32-bit PCI
interface.
AMR slot: The AMR slot is used to insert an ASRock MR card (optional) with
v.92 Modem functionality.
AGP slot: The AGP slot is used to install a graphics card. The ASRock AGP slot has
a special design of clasp that can securely fasten the inserted graphics
card.
Please do NOT use a 3.3V AGP card on the AGP slot of this motherboard!
It may cause permanent damage! For the voltage information of your
graphics card, please check with the graphics card vendors.
Installing an expansion card
Step 1. Before installing the expansion card, please make sure that the power
supply is switched off or the power cord is unplugged. Please read the
documentation of the expansion card and make necessary hardware
settings for the card before you start the installation.
Step 2. Remove the system unit cover (if your motherboard is already installed
in a chassis).
Step 3. Remove the bracket facing the slot that you intend to use.
Keep the screws for later use.
Step 4. Align the card connector with the slot and press firmly until the card is
completely seated on the slot.
Step 5. Fasten the card to the chassis with screws.
Step 6. Replace the system cover.

14
2.5 Jumpers Setup
The illustration shows how jumpers are setup. When
the jumper cap is placed on pins, the jumper is
“SHORT”. If no jumper cap is placed on the pins,
the jumper is “OPEN”. The illustration shows a 3-pin
jumper whose pin1 and pin2 are “SHORT” when
jumper cap is placed on these 2 pins.
Jumper Setting
FSB Select K7S41:
Jumpers
(see p.7/p.8 No. 27)
K7S41GX:
Note: The setting of the CPU front side bus frequency of this motherboard is by means of the
adjustment of jumper-setting. You must set the FSB jumper according to your AMD CPU
before you use the “Manual” option as the FSB setting in BIOS setup to perform over
clocking. Please follow the figures above to set the CPU front side bus frequency.
PS2_USB_PWR1 Short pin2, pin3 to enable
(see p.7/p.8 No. 1) +5VSB (standby) for PS/2 or
USB wake up events.
Note: To select +5VSB, it requires 2 Amp and higher standby current provided by power
supply.
JR1(see p.7/p.8 No. 24)
JL1(see p.7/p.8 No. 23)
Note: If the jumpers JL1 and JR1 are short (see the figure above), both front panel and rear
panel audio connectors can work.
+5V
1_2
+5VSB
2_3
FSB 200MHz
FSB_SEL0
FSB_SEL2
FSB_SEL1
2_3
1_2
2_3
FSB 266MHz
FSB_SEL0
FSB_SEL2
FSB_SEL1
2_3
2_3
2_3
FSB 333MHz
2_3
FSB_SEL0
FSB_SEL2
FSB_SEL1
1_2
1_2
JR1 JL1
FSB 400MHz
FSB_SEL0
FSB_SEL2
FSB_SEL1
1_2
1_2
1_2
FSB 200MHz
FSB_SEL0
FSB_SEL1
2_3
1_2
FSB 266MHz
FSB_SEL0
2_3
FSB_SEL1
2_3
FSB 333MHz
FSB_SEL0
FSB_SEL1
1_2
1_2

15
solder points 2-pin jumper
Clear CMOS
(CLRCMOS1, solder points) (CLRCMOS2, 2-pin jumper)
(see p.7/p.8 No. 11) (see p.7/p.8 No. 12)
Note: CLRCMOS1 and CLRCMOS2 allow you to clear the data in CMOS. The data in CMOS
includes system setup information such as system password, date, time, and system
setup parameters. There are 2 ways for you to clear and reset the system parameters to
the default setup. Please turn off the computer and unplug the power cord, then you may
either short the solder points on CLRCMOS1 by using metal material, e.g., a paper clip for
3 seconds; or you may use a jumper cap to short the pin on CLRCMOS2 for 3 seconds.
Please remember to remove the paper clip or the jumper cap after clearing the CMOS. If
you need to clear the CMOS when you just finish updating the BIOS, you must boot up the
system first, and then shut it down before you do the clear-CMOS action.
FID Jumpers
(FID0, FID1, FID2, FID3, FID4)
(see p.7/p.8 No. 30)
Note: The set of FID jumpers are only for advanced users to adjust the multiplier of CPU. Please
follow the table below to adjust the multiplier of CPU. However, the system will work well
without the adjustment of multiplier. You do not have to adjust the multiplier for normal
usage.
Multiplier FID0 FID1 FID2 FID3 FID4
5x 1-2 1-2 2-3 1-2 1-2
5.5x 2-3 1-2 2-3 1-2 1-2
6x 1-2 2-3 2-3 1-2 1-2
6.5x 2-3 2-3 2-3 1-2 1-2
7x 1-2 1-2 1-2 2-3 1-2
7.5x 2-3 1-2 1-2 2-3 1-2
8x 1-2 2-3 1-2 2-3 1-2
8.5x 2-3 2-3 1-2 2-3 1-2
9x 1-2 1-2 2-3 2-3 1-2
9.5x 2-3 1-2 2-3 2-3 1-2
10x 1-2 2-3 2-3 2-3 1-2
10.5x 2-3 2-3 2-3 2-3 1-2
11x 1-2 1-2 1-2 1-2 1-2
11.5x 2-3 1-2 1-2 1-2 1-2
12x 1-2 2-3 1-2 1-2 1-2
12.5x 2-3 2-3 1-2 1-2 1-2
13x 1-2 1-2 2-3 1-2 2-3
13.5x 2-3 1-2 2-3 1-2 2-3
14x 1-2 2-3 2-3 1-2 2-3
15x 1-2 1-2 1-2 2-3 2-3
16x 1-2 2-3 1-2 2-3 2-3
16.5x 2-3 2-3 1-2 2-3 2-3
17x 1-2 1-2 2-3 2-3 2-3
18x 2-3 1-2 2-3 2-3 2-3
19x 2-3 1-2 1-2 1-2 2-3
20x 2-3 2-3 1-2 1-2 2-3
21x 2-3 2-3 2-3 1-2 2-3
22x 2-3 1-2 1-2 2-3 2-3
23x 1-2 2-3 2-3 2-3 2-3
24x 2-3 2-3 2-3 2-3 2-3
1
1
1
1
1
FID0
FID1
FID2
FID3
FID4

16
For example, “Athlon XP 2000+” is an 1666MHz CPU: 12.5 (Multiplier) X 133MHz (External frequency) = 1666MHz
FID jumpers setting:
The jumper caps are not provided by ASRock. Please understand that ASRock
does not guarantee and support the adjustment of multiplier. These jumpers
setting may not apply to all multiplier-locked or even some unlocked AMD
CPU. Frequencies other than the recommended CPU bus frequencies may
cause the instability of the system or damage the CPU.
2.6 Connectors
Connectors are NOT jumpers. DO NOT place jumper caps over these
connectors. Placing jumper caps over the connectors will cause perma-
nent damage of the motherboard!
Connector Figure Description
FDD Connector
(33-pin FLOPPY1)
(see p.7/p.8 No. 17)
Note: Make sure the red-striped side of the cable is plugged into Pin1 side of the
connector.
Primary IDE Connector (Blue) Secondary IDE Connector (Black)
(39-pin IDE1, see p.7/p.8 No. 8) (39-pin IDE2, see p.7/p.8 No. 7)
80-conductor, ATA 66/100/133 cable
Note: If you use only one IDE device on this motherboard, please set the IDE
device as “Master”. Please refer to the instruction of your IDE device vendor
for the details. Besides, to optimize compatibility and performance, please
connect your hard disk drive to the primary IDE connector (IDE1, blue) and
CD-ROM to the secondary IDE connector (IDE2, black).
1
1
1
1
1
FID0
FID1
FID2
FID3
FID4
IDE1
PIN1
IDE2
PIN1
FLOPPY1
Pin1
connect the black end
to the IDE devices
connect the blue end
to the motherboard
the red-striped side to Pin1

17
USB 2.0 Connector There are 4 default USB 2.0
(9-pin USB45) ports on the rear panel. If the
(see p.7/p.8 No. 18) rear USB ports are not sufficient,
this USB 2.0 connector is
available to support 2 additional
USB 2.0 ports.
Infrared Module Connector This connector supports an
(5-pin IR1) optional wireless transmitting
(see p.7/p.8 No. 19) and receiving infrared module.
Internal Audio Connectors These connectors allow you to
(4-pin CD1, 4-pin AUX1) receive stereo audio input from
(CD1: see p.7/p.8 No. 28) sound sources such as a CD-
(AUX1: see p.7/p.8 No. 29) ROM, DVD-ROM, TV tuner card,
or MPEG card.
Front Panel Audio Connector This is an interface for front panel
(9-pin AUDIO1) audio cable that allows conve-
(see p.7/p.8 No. 25) nient connection and control of
audio devices.
System Panel Connector This connector accommodates
(9-pin PANEL1) several system front panel
(see p.7/p.8 No. 15) functions.
Chassis Speaker Connector Please connect the chassis
(4-pin SPEAKER 1) speaker to this connector.
(see p.7/p.8 No. 16)
Chassis Fan Connector Please connect a chassis fan
(3-pin CHA_FAN1) cable to this connector and
(see p.7/p.8 No. 13) match the black wire to the
ground pin.
CPU Fan Connector Please connect a CPU fan cable
(3-pin CPU_FAN1) to this connector and match
(see p.7/p.8 No. 2) the black wire to the ground pin.
USB_PWR
USB_PWR
P+5
P-5
P+4
P-4
GND
GND
DUMMY
1
DUMMY
GND
+5V
IRTX
IRRX
1
+5V
DUMMY
DUMMY
SPEAKER
1
GND
DUMMY
+5VA
BACKOUT-R
BACKOUT-L
AUD-OUT-L
AUD-OUT-R
MIC-POWER
MIC
1
GND
PWRBTN#
PLED-
PLED+
DUMMY
RESET#
GND
HDLED+
HDLED-
1
AUX-L
GND
GND
AUX-R
CD-L
GND
GND
CD-R
CD1
AUX1
GND
+12V
CHA_FAN_SPEED

18
ATX Power Connector Please connect an ATX power
(20-pinATXPWR1) supply to this connector.
(see p.7/p.8 No. 6)
Serial port connector This COM1 connector supports
(9-pin COM1) a serial port module.
(see p.7/p.8 No. 22)
Power LED Connector Please connect a 3-pin power
(3-pin PWR_LED1) LED cable to this connector.
(see p.7/p.8 No. 14)
CCTS#1
DDSR#1
DDTR#1
RRXD1
DDCD#1
TTXD1
GND
RRTS#1
RRI#1
1
1
PLED+
PLED+
PLED-

19
Chapter 3 BIOS Setup
3.1 BIOS Setup Utility
This section explains how to use the BIOS Setup Utility to configure your system.
The Flash Memory on the motherboard stores the BIOS Setup Utility. You may run the
BIOS Setup when you start up the computer. Please press <F2> during the Power-
On-Self-Test (POST) to enter the BIOS Setup Utility, otherwise, POST will continue
with its test routines.
If you wish to enter the BIOS Setup after POST, restart the system by pressing
<Ctl> + <Alt> + <Delete>, or by pressing the reset button on the system chassis.
You may also restart the system by turning the system off and then back on.
The BIOS Setup Utility is designed to be user-friendly. It is a menu-driven program,
which allows you to scroll through its various sub-menus and select among the
predetermined choices.
Because the BIOS software is constantly being updated, the
following BIOS setup screens and descriptions are for reference
purpose only, and may not exactly match what you see on your
screen.
3.1.1 BIOS Menu Bar
The top of the screen has a menu bar with the following selections:
MAIN Sets up the basic system configuration
ADVANCED Sets up the advanced features
SECURITY Sets up the security features
POWER Configures Power Management features
BOOT Configures the default system device that is used
to locate and load the Operating System
EXIT Exits the current menu or the BIOS Setup
To access the menu bar items, press the right or left arrow key on the keyboard
until the desired item is highlighted.
3.1.2 Legend Bar
At the bottom of the Setup Screen is a legend bar. The following table lists the keys
in the legend bar with their corresponding functions.

20
Navigation Key(s) Function Description
<F1> Displays the General Help Screen
<ESC> Jumps to the Exit menu or returns to the upper menu
from the current menu
/ Moves cursor up or down between fields
/ Selects menu to the left or right
+ / - Increases or decreases values
<Enter> Brings up a selected menu for a highlighted field
<F9> Loads all the setup items to default value
<F10> Saves changes and exits Setup
3.2 Main Menu
When you enter the BIOS Setup Utility, the following screen appears.
System Date [Month/Day/Year]
Set the system date that you specify. Valid values for month, day, and year are
Month: (Jan to Dec), Day: (1 to 31), Year: (up to 2099). Use keys to move
between the Month, Day, and Year fields.
System Time [Hour:Minute:Second]
Set the system to the time that you specify. Use keys to move between
the Hour, Minute, and Second fields.
Floppy Drives
Use this to set the type of floppy drives installed.
IDE Devices
Use this to configure IDE devices.
AMIBIOS SETUP UTILITY - VERSION 3.31a
Main Advanced
Security Power
Boot
Exit
System Date
System Time
Floppy Drives
IDE Devices
BIOS Version
Processor Type
Processor Speed
L1 Cache Size
L2 Cache Size
Total Memory
DDR1
DDR2
[ Setup Help ]
K7S41 BIOS P1.00
AMD Athlon(tm) XP 2600+
Month: Jan - Dec
Day: 01-31
Year:1980-2099
F1:Help
Esc:Exit
F9:Setup Defaults
F10:Save & Exit
+/-:Change Values
Enter:Select Sub-Menu
:Select Item
:Select Menu
2133 MHz
128 KB
256 KB
480 MB + 32 MB Share Memory
None
512 MB / 133 MHz (DDR 266)
20:07:40
11 2003 Thu
Dec