MSI 845 Ultra C Manual

							Chapter 2
2-14
Modem-In Connector: JMD1
The connector is for modem with internal audio connector.
CD-In Connector: JCD1
The connector is for CD-ROM audio connector.
Aux Line-In Connector: JAUX1
The connector is for DVD add-on card with Line-in connector.
JMD1
GND
Phone_In Mono_Out
JCD1
GND
R
L
JAUX1
GND
R
L 
						

							Hardware Setup
2-15
Fan Power Connectors: CFAN1/SFAN1
The CFAN1 (processor fan) and SFAN1 (system fan) support system
cooling fan with +12V. It supports three-pin head connector. When connect-
ing the wire to the connectors, always take note that the red wire is the positive
and should be connected to the +12V, the black wire is Ground and should be
connected to GND. If the mainboard has a System Hardware Monitor chipset
on-board, you must use a specially designed fan with speed sensor to take
advantage of the CPU fan control.
Note:
1. Always consult the vendor for proper CPU cooling fan.
2. CPU Fan supports the fan control. You can install the PC Alert
utility that will automatically control the CPU Fan speed accord-
ing to the actual CPU temperature.
CFAN1
SENSOR +12V GND
SENSOR +12V GND
SFAN1 
						

							Chapter 2
2-16
Wake On Ring Connector: JWR1
This connector allows you to connect to a modem card with Wake On
Ring function. The connector will power up the system when a signal is re-
ceived through the modem card.
Pin Signal
1NC
2 GND
3 MDM_WAKEUP
4NC
5 5VSB
JWR1
15
Power Saving Switch Connector: JGS1
Attach a power saving switch to this connector. Pressing the switch
once will have the system enter the sleep/suspend state. Press any key to wake
up the system.
JGS1 
						

							Hardware Setup
2-17
Front Panel Connector: JFP1 & JFP2
The mainboard provides two front panel connectors for establishing
electrical connection to the front panel switches and LEDs. Users can choose
either JFP1 or JFP2.  Both JFP1 and JFP2 are compliant with Intel
® Front Panel
I/O Connectivity Design Guide.
JFP2
(BUZ is optional)
Pin Signal
1 GND
2 SPK-
3 SLED
4 BUZ+Pin Signal
5 PLED
6 BUZ-
7NC
8 SPK+
JFP2 Pin Definition
PIN SIGNAL DESCRIPTION
1 HD_LED_P Hard disk LED pull-up to +5V
2 FP PWR/SLP MSG LED pull-up to +5V
3 HD_LED_N Hard disk active LED
4 FP PWR/SLP MSG LED pull-up to +5V
5 RST_SW_N Reset Switch low reference pull-down to GND
6 PWR_SW_P Power Switch high reference pull-up to +5V
7 RST_SW_P Reset Switch high reference pull-up to +5V
8 PWR_SW_NPower Switch low reference pull-down to GND
9 RSVD_DNU Reserved. Do not use.
JFP1 Switch/LED Front Panel Electrical Connection
1 27
8
P
GND + +
-
-LED
SPK
S BUZ
JFP1
10
1 9
2
HDD S PWSW
RST
-
LED
P+
+
- -+ 
						

							Chapter 2
2-18
Front Panel Audio Connector: JAUD1
You can connect an optional audio connector to the JAUD1 front panel
audio connector. The JAUD1 is compliant to Intel® Front Panel I/O Connectiv-
ity Design Guide.
JAUD1
1
      2
10
     9
CAUTION!!!
If you don’t want to connect to the front audio
header, pins 5 and 6, 9 and 10 have to be shorted
by jumper caps in order to have signal output
directed to the rear audio ports.
5 610
     9
PIN SIGNAL DESCRIPTION
1 AUD_MICFront panel microphone input signal
2 AUD_GNDGround used by analog audio circuits
3 AUD_MIC_BIAS Microphone power
4 AUD_VCCFiltered +5V used by analog audio circuits
5 AUD_FPOUT_R Right channel audio signal to front panel
6 AUD_RET_R Right channel audio signal return from front panel
7 HP_ON Reserved for future use to control headphone amplifier
8 KEY No pin
9 AUD_FPOUT_L Left channel audio signal to front panel
10 AUD_RET_L Left channel audio signal return from front panel
 Pin Definition 
						

							Hardware Setup
2-19
Front USB Connector: JUSB1
The mainboard provides a front Universal Serial Bus connector for you
to connect to USB devices.  The JUSB1 connector is compliant with Intel®
Front Panel I/O Connectivity Design Guide.
Pin Description Pin Description
1 USBPWR 2 USBPWR
3 USBP0- 4 USBP1-
5 USBP0+ 6 USBP1+
7 GND 8 GND
9 N C 10 USBOC
JUSB1 Pin Definition
JUSB1
     1
   9     2  10 
						

							Chapter 2
2-20
D-Bracket™ Connector: JDB1
The mainboard comes with a JDB1 connector for you to connect to D-
Bracket™.  D-Bracket™  is a USB Bracket integrating four LEDs and allows
users to identify system problem through 16 various combinations of LED
signals. For definitions of 16 signal combinations, please refer to Chapter 1. D-
Bracket™.
JDB1
     1   9     2
  10
D-Bracket™
Connected to JDB1
Connected to JUSB1 
						

							Hardware Setup
2-21
Clear CMOS Jumper: JBAT1
There is a CMOS RAM on board that has a power supply from external
battery to keep the data of system configuration. With the CMOS RAM, the
system can automatically boot OS every time it is turned on. That battery has
long life time for at least 5 years.  If you want to clear the system configuration,
use the JBAT1 (Clear CMOS Jumper ) to clear data. Follow the instructions
below to clear the data:
Jumpers
The motherboard provides one jumper for you to set the computer’s
function. This section will explain how to change your motherboard’s function
through the use of the jumper.
You can clear CMOS by shorting 2-3 pin while the
system is off. Then return to 1-2 pin position. Avoid
clearing the CMOS while the system is on; it will
damage the mainboard.
WARNING!
Clear CMOS3 1Keep CMOS3 1
JBAT1
1 
						

							Chapter 2
2-22
Slots
AGP (Accelerated Graphics Port) Slot
The AGP slot allows you to insert the AGP graphics card. AGP is an
interface specification designed for the throughput demands of 3D graphics.  It
introduces a 66MHz, 32-bit channel for the graphics controller to directly ac-
cess main memory and provides three levels of throughputs: 1x (266Mbps), 2x
(533Mbps) and 4x (1.07Gbps).
Please note that the AGP slot does not support 3.3V AGP card.  Use of 3.
3V AGP card may cause damages to the mainboard.  To avoid the risk of
causing permanent damages to the mainboard, the AGP slot is protected with
MSI electrical routing device.  If users have inserted a 3.3V AGP card into the
slot, the MSI routing device will disable the computer’s boot-up system.  Re-
move the 3.3V AGP card and the boot-up system will return to normal.The motherboard provides six 32-bit Master PCI bus slots, one AGP slot
and one CNR slot.
PCI SlotsAGP Slot
CNR Slot 
						

							Hardware Setup
2-23
PCI Slots
Six PCI slots allow you to insert the expansion cards to meet your needs.
When adding or removing expansion cards, make sure that you unplug the
power supply first. Meanwhile, read the documentation for the expansion card
to make any necessary hardware or software settings for the expansion card,
such as jumpers, switches or BIOS configuration.
CNR (Communication Network Riser)
The CNR slot allows you to insert the CNR expansion cards. CNR is a
specially designed network, audio, or modem riser card for ATX family
motherboards. Its main processing is done through software and controlled by
the motherboard’s chipset.DO NOT use the following AGP cards which would cause dam-
ages to the mainboard.  The following list is subject to change
without prior notice.
Model AGP Chip
ATI Xpert2000 3D RAGE 128VR
ATI Rage Furry Maxx 3D RAGE 128 Pro
Diamond Monster Fusion 3DFX VooDoo Banshee
Hercules KYRO II 4500
Leadtek Winfast VR300SiS300
Matrox Millennium G400 G4+MDHA32G
STB 3Dfx VooDoo3 3500TV 3Dfx VooDoo 3500TV
Attention!