MSI MS-6791 Bedienungsanleitung
1-1
Getting Started
Thank you for purchasing the MS-6791 v1.x M-ATX
mainboards. The MS-6791 is a superior computer motherboard
based on SiS648FX/661FX and SiS963/963L chipsets for
optimal system efficiency. Designed to fit the advanced Intel®
Pentium®4 Northwood/Prescott processors in the 478 pin
package, the MS-6791 delivers a high performance and
professional desktop platform solution.
Getting Started
1-2
MS-6791 M-ATX Mainboard
Mainboard Specifications
CPU
hSupports Socket 478 for P4 processor with 400/533/800 MHz (100/133/200
MHzQDIR)
hCore frequency up to 3.2GHz or above
Chipset
hSiS®648FX/661FX chipsets
- Supports Intel Pentium 4 processors with data transfer rate up to 800MHz
- Supports 64-bit high performance DDR400/DDR333/DDR266 memory
controller
- Supports AGP 8X/4X interface at 0.8v or 4x at 1.5v with fast write transaction
- Supports on-board graphics core (SiS 661FX only)
hSiS®963/963L chipsets
- Dual-IDE ATA 66/100/133
- ACPI & PC2001 compliant enhanced power management
- Integrated audio controller with AC97 interface
- Integrated high speed USB 2.0 controller, 480Mb/s
MainMemory
hSupports two 184-pin DDR 200/266/333/400 DIMMs
hSupports up to 2GB memory size without ECC
Slots
hOne AGP (Accelerated Graphics Port) slot
- AGP specification compliant
- Supports AGP 3.0 4x/8x
hThree 32-bit PCI bus slots
On-Board IDE
hAn IDE controller on the SiS®963/963L chipset provides IDE HDD/CD-
ROM with PIO, Bus Master and Ultra DMA66/100/133 operation modes
hCan connect up to 4 IDE devices
On-Board Peripherals
hOn-Board Peripherals include:
- 1 floppy port supports 2 FDDs with 360K, 720K, 1.2M, 1.44M and
2.88Mbytes
1-3
Getting Started
- 2 serial ports (COM A + COM B)
- 1 parallel port supports SPP/EPP/ECP mode
- 1 audio port (Line-in, Line-out, Mic-in)
- 6 high speed USB 2.0 ports (Rear * 4/ Front * 2)
- 1 IrDA connector for SIR
- 1 RJ-45 LAN jack (Optional)
Audio
h6-channel audio codec RealTek ALC650/655 (Optional)
h2-channel audio codec RealTek ALC202A (Optional)
LAN (Optional)
hRealtek 8100C
BIOS
hThe mainboard BIOS provides “Plug & Play” BIOS which detects the
peripheral devices and expansion cards of the board automatically.
hThe mainboard provides a Desktop Management Interface (DMI) function
which records your mainboard specifications.
Dimension
hM-ATX Form Factor: 24.4cm (L) x 24.4cm (W)
Mounting
h6 mounting holes
Others
hACPI support, including STR/STD (S3/S4)
hSupport WOM/WOL
hPC2001 compliant
1-4
MS-6791 M-ATX Mainboard
JUSB1 JUSB2
Mainboard Layout
MS-6791 v1.X M-ATX Mainboard
BATT
+
DDR1
DDR2
J1394_1 J1394_2
JFP1
JMR1
JCI1
JSMI1
JUSB1
JUSB3
JUSB4
JUSB2
ATX
PowerSupply
NBFAN1
CPUFAN1
PWRFAN1
PWRSW1
CHSFAN1
JBAT1
JGLED1
BIOS_WP1
BIOS
IDE1
IDE2
To p : P a ra l l e l P o r t
Bottom:
COM A
COM B (SiS648FX)
VGA (SiS661FX)
Top : mouse
Bottom: keyboard
Top: LAN Jack
Bottom: USB
ports
USB ports
MDM_IN1
JLAN1
JCPU_TEMP
CD_IN1
CD_IN2
JAUD1 JAUDIO1
Codec
Realtek
8801B
RealTek
8100C
Winbond
W83697HF
JPW1
FDD1
AGP Slot
PCI Slot3
PCI Slot2
PCI Slot1
T:
Line-Out
B:Mic
Line-In
M:
SiS
648FX/661FX
SiS
963/963L
IR1
JWOL1
JSP1
JUSB3 JUSB4
2-1
Hardware Setup
Chapter 2. Hardware
Setup
This chapter tells you how to install the CPU, memory
modules, and expansion cards, as well as how to setup the
jumpers on the mainboard. Also, it provides the instructions on
connecting the peripheral devices, such as the mouse, keyboard,
etc.
While doing the installation, be careful in holding the
components and follow the installation procedures.
Hardware Setup
2-2
MS-6791 M-ATX Mainboard
Quick Components Guide
JSP1, p.2-23
MDM_IN1, p.2-22
DDR DIMMs, p.2-7
CPU, p.2-3
Back Panel I/O,
p.2-10
CPUFAN, p.2-17
CHSFAN, p.2-17
JBAT1, p.2-29
JCI1, p.2-27
IDE1, IDE2,
p.2-19
PWRFAN1, p.2-17
IR1,p.2-28
CONN1, p.2-9
JLEG1, p.2-18
FDD1, p.2-16
JFP1, p.2-18
JMR1, p.2-26
JWOL1, p.2-26
JGLED1, p.2-27
JAUDIO1, p.2-20
NBFAN, p.2-17
JPW1, p.2-9
PWRSW1, p.2-28
USB Ports, p.2-24
JSMI1, p.2-27
J1394_1/2, p.2-25
JAUD1, p.2-20
BIOS_WP1,p.2-30
JLAN1, p.2-30
CD_IN1, p.2-22
CD_IN2, p.2-22
JCPU_TEMP, p.2-28
2-3
Hardware Setup
Central Processing Unit: CPU
CPU Core Speed Derivation Procedure
If CPUClock = 100MHz
Core/Bus ratio = 16
then CPU core speed = Host Clock x Core/Bus ratio
= 100MHz x 16
= 1.6GHz
The mainboard supports Intel®Pentium®4 Northwood/Prescott processor
in the 478 pin package. The mainboard uses a CPU socket called PGA478 for
easy CPU installation. When you are installing the CPU, make sure the CPU
hasaheatsinkandacoolingfanattachedonthetoptopreventoverheating. If
you do not find the heat sink and cooling fan, contact your dealer to purchase
and install them before turning on the computer.
MSIRemindsYou...
Overheating
Overheating will seriously damage the CPU and system, always
make sure the cooling fan can work properly to protect the CPU
from overheating.
Overclocking
This motherboard is designed to support overclocking. However,
please make sure your components are able to tolerate such
abnormal setting, while doing overclocking. Any attempt to
operate beyond product specifications is not recommended. We
do not guarantee the damages or risks caused by inadequate
operation or beyond product specifications.
Memory Speed/CPU FSB Support Matrix
FSB Memory DDR266
400MHz
DDR333 DDR400
533MHz
800MHz
N/A
OK OK
N/A
N/A
OK OK
OK OK
2-4
MS-6791 M-ATX Mainboard
CPU Installation Procedures for Socket 478
1. Please turn off the power and
unplug the power cord before
installing the CPU.
2. Pull the lever sideways away
from the socket. Make sure
to raise the lever up to a 90-
degree angle.
3. Look for the gold arrow. The
gold arrow should point to-
wards the lever pivot. The
CPU can only fit in the correct
orientation.
4. If the CPU is correctly
installed, the pins should be
completely embedded into the
socket and can not be seen.
Please note that any violation
of the correct installation pro-
cedures may cause permanent
damages to your mainboard.
5. Pressthe CPUdownfirmlyinto
the socket and close the lever.
As the CPU is likely to move
whiletheleverisbeingclosed,
always close the lever with
your fingers pressing tightly
ontopof the CPUtomakesure
the CPU is properly and com-
pletely embedded into the
socket.
Open Lever
90 degree
Sliding
Plate
Close
Lever
Press down
the CPU
Gold arrow
Gold arrow
Gold arrow
Correct CPU placement
Incorrect CPU placement
X
O
2-5
Hardware Setup
InstallingtheCPUFan
As processor technology pushes to faster speeds and higher
performance,thermalmanagement becomes increasinglyimportant.To dissipate
heat, you need to attach the CPU cooling fan and heatsink on top of the CPU.
Follow the instructions below to install the Heatsink/Fan:
2. Position the heatsink onto the reten-
tion mechanism.
1. Locate the CPU and its retention
mechanism on the motherboard.
3. Mount the fan on top of the heatsink.
Press down the fan until its four clips
get wedged in the holes of the reten-
tion mechanism.
4. Press the two levers down to fasten
the fan. Each lever can be pressed
down in only ONE direction.
retention mechanism
levers
2-6
MS-6791 M-ATX Mainboard
5. Connect the fan power cable from the mounted fan to the 3-pin fan power connector
on the board.
fan power cable
NOTES
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