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Gigabyte Ga945gcms2l User Guide

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    							Hardware Installation - 21 -
    1-7 Internal Connectors
    Read the following guidelines before connecting external devices:
    •First make sure your devices are compliant with the connectors you wish to connect.
    •Before installing the devices, be sure to turn off the devices and your computer. Unplug the
    power cord from the power outlet to prevent damage to the devices.
    •After installing the device and before turning on the computer, make sure the device cable
    has been securely attached to the connector on the motherboard.
    1) ATX_12V
    2) ATX
    3) CPU_FAN
    4) SYS_FAN
    5) FDD
    6) IDE
    7) SATAII0 / 1 / 2 / 3
    8) PWR_LED
    9) BAT
    10) F_PANEL
    11) F_AUDIO
    12) CD_IN
    13) SPDIF_O
    14) F_USB1 / F_USB2
    15) CLR_CMOS
    16) C I
    2
    10
    5147
    3
    6
    8
    16
    1
    413
    9
    11
    12
    15 
    						
    							GA-945GCM-S2L/S2C Motherboard - 22 -
    1/2) ATX_12V/ATX (2x2 12V Power Connector and 2x12 Main Power Connector)
    With the use of the power connector, the power supply can supply enough stable power to all the
    components on the motherboard. Before connecting the power connector, first make sure the
    power supply is turned off and all devices are properly installed. The power connector possesses
    a foolproof design. Connect the power supply cable to the power connector in the correct orientation.
    The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not
    connected, the computer will not start.
    •To meet expansion requirements, it is recommended that a power supply that can withstand
    high power consumption be used (400W or greater). If a power supply is used that does not
    provide the required power, the result can lead to an unstable or unbootable system.
    •The main power connector is compatible with power supplies with 2x10 power
    connectors. When using a 2x12 power supply, remove the protective cover from the
    main power connector on the motherboard. Do not insert the power supply cable into pins
    under the protective cover when using a 2x10 power supply.
    ATX_12V :
    ATX :Pin No. Definition
    1 GND
    2 GND
    3 +12V
    4 +12V
    Pin No. Definition
    13 3.3V
    14 -12V
    15 GND
    16 PS_ON(soft On/Off)
    17 GND
    18 GND
    19 GND
    20 -5V
    21 +5V
    22 +5V
    23 +5V (Only for 2x12-pin ATX)
    24 GND (Only for 2x12-pin ATX)
    Pin No. Definition
    1 3.3V
    2 3.3V
    3 GND
    4 +5V
    5 GND
    6 +5V
    7 GND
    8 Power Good
    9 5V SB(stand by +5V)
    10 +12V
    11 +12V (Only for 2x12-pin ATX)
    12  3.3V (Only for 2x12-pin ATX)
    ATX_12V4
    2 3
    1
    13 124 12
    ATX 
    						
    							Hardware Installation - 23 -
    5) FDD (Floppy Disk Drive Connector)
    This connector is used to connect a floppy disk drive. The types of floppy disk drives supported
    are: 360 KB, 720 KB, 1.2 MB, 1.44 MB, and 2.88 MB. Before connecting a floppy disk drive, be
    sure to locate pin 1 of the connector and the floppy disk drive cable. The pin 1 of the cable is
    typically designated by a stripe of different color.
    •Be sure to connect fan cables to the fan headers to prevent your CPU and system from
    overheating. Overheating may result in damage to the CPU or the system may hang.
    •These fan headers are not configuration jumper blocks. Do not place a jumper cap on the
    headers.
    3/4) CPU_FAN/SYS_FAN (Fan Headers)
    The motherboard has a 4-pin CPU fan header (CPU_FAN) and a 3-pin system fan header
    (SYS_FAN). Each fan header supplies a +12V power voltage and possesses a foolproof insertion
    design. When connecting a fan cable, be sure to connect it in the correct orientation. Most fans are
    designed with color-coded power connector wires. A red power connector wire indicates a
    positive connection and requires a +12V voltage. The black connector wire is the ground wire. The
    motherboard supports CPU fan speed control, which requires the use of a CPU fan with fan speed
    control design. For optimum heat dissipation, it is recommended that a system fan be installed
    inside the chassis.
    Pin No. Definition
    1 GND
    2 +12V
    3 Sense
    4 Speed Control
    CPU_FAN :
    Pin No. Definition
    1 GND
    2 +12V
    3 Sense
    SYS_FAN :
    1 1
    CPU_FAN
    SYS_FAN
    1
    2 33
    34 
    						
    							GA-945GCM-S2L/S2C Motherboard - 24 -
    6) IDE (IDE Connector)
    The IDE connector supports up to two IDE devices such as hard drives and optical drives. Before
    attaching the IDE cable, locate the foolproof groove on the connector. If you wish to connect two IDE
    devices, remember to set the jumpers and the cabling according to the role of the IDE devices (for
    example, master or slave). (For information about configuring master/slave settings for the IDE
    devices, read the instructions from the device manufacturers.)
    7) SATAII0/1/2/3 (SATA 3Gb/s Connectors, Controlled by ICH7)
    The SATA connectors conform to SATA 3Gb/s standard and are compatible with SATA 1.5Gb/s
    standard. Each SATA connector supports a single SATA device.
    Pin No. Definition
    1 GND
    2 TXP
    3 TXN
    4 GND
    5 RXN
    6 RXP
    7 GND
    1 239 40
    SATAII0SATAII1
    SATAII2SATAII31 7
    1 7
    1 7
    1 7 
    						
    							Hardware Installation - 25 -
    8) PWR_LED (System Power LED Header)
    This header can be used to connect a system power LED on the chassis to indicate system power
    status. The LED is on when the system is operating. The LED keeps blinking when the system is
    in S1 sleep state. The LED is off when the system is in S3/S4 sleep state or powered off (S5).
    Pin No. Definition
    1 MPD+
    2 MPD-
    3 MPD-
    System Status LED
    S0 On
    S1 Blinking
    S3/S4/S5 Off
    9) BAT(BATTERY)
    The battery provides power to keep the values (such as BIOS configurations, date, and time
    information) in the CMOS when the computer is turned off. Replace the battery when the battery
    voltage drops to a low level, or the CMOS values may not be accurate or may be lost.
    •Always turn off your computer and unplug the power cord before replacing the battery.
    •Replace the battery with an equivalent one. Danger of explosion if the battery is replaced
    with an incorrect model.
    •Contact the place of purchase or local dealer if you are not able to replace the battery by
    yourself or uncertain about the battery model.
    •When installing the battery, note the orientation of the positive side (+) and the negative
    side (-) of the battery (the positive side should face up).
    •Used batteries must be handled in accordance with local environmental regulations.
    You may clear the CMOS values by removing the battery:
    1. Turn off your computer and unplug the power cord.
    2. Gently remove the battery from the battery holder and wait for one minute.
    (Or use a metal object like a screwdriver to touch the positive and
    negative terminals of the battery holder, making them short for 5 seconds.)
    3. Replace the battery.
    4. Plug in the power cord and restart your computer.
    1 
    						
    							GA-945GCM-S2L/S2C Motherboard - 26 -
    10)  F_PANEL (Front Panel Header)
    Connect the power switch, reset switch, speaker and system status indicator on the chassis front
    panel to this header according to the pin assignments below. Note the positive and negative pins
    before connecting the cables.
    The front panel design may differ by chassis. A front panel module mainly consists of
    power switch, reset switch, power LED, hard drive activity LED, speaker and etc. When
    connecting your chassis front panel module to this header, make sure the wire assign-
    ments and the pin assignments are matched correctly. •PW (Power Switch):
    Connects to the power switch on the chassis front panel. You may configure the way to turn off
    your system using the power switch (refer to Chapter 2, BIOS Setup, Power Management
    Setup, for more information).
    •SPEAK (Speaker):
    Connects to the speaker on the chassis front panel. The system reports system startup status
    by issuing a beep code. One single short beep will be heard if no problem is detected at system
    startup. If a problem is detected, the BIOS may issue beeps in different patterns to indicate the
    problem. Refer to Chapter 5, Troubleshooting, for information about beep codes.
    •HD (IDE Hard Drive Activity LED)
    Connects to the hard drive activity LED on the chassis front panel. The LED is on when the hard
    drive is reading or writing data.
    •RES (Reset Switch):
    Connects to the reset switch on the chassis front panel. Press the reset switch to restart the
    computer if the computer freezes and fails to perform a normal restart.
    •NC:
    No connection
    System Status LED
    S0 On
    S1 Blinking
    S3/S4/S5 Off
    •MSG (Message/Power/Sleep LED):
    Connects to the power status indicator on the chassis front panel. The
    LED is on when the system is operating. The LED keeps blinking when
    the system is in S1 sleep state. The LED is off when the system is in
    S3/S4 sleep state or powered off (S5).
    1 219
    20
    HD-
    HD+RES+
    RES- NC
    SPEAK-
    MSG-
    MSG+PW-
    PW+
    SPEAK+
    Message LED/
    Power/
    Sleep LED
    Power Switch
    Speaker Connector
    IDE Hard Disk
    Active LED
    Reset Switch 
    						
    							Hardware Installation - 27 -
    12) CD_IN (CD In Connector)
    You may connect the audio cable that came with your optical drive to the header.
    Pin No. Definition
    1 CD-L
    2 GND
    3 GND
    4 CD-R
    1
    11) F_AUDIO  (Front Panel Audio Header)
    The front panel audio header supports Intel High Definition audio (HD) and AC97 audio. You may
    connect your chassis front panel audio module to this header. Make sure the wire assignments of
    the module connector match the pin assignments of the motherboard header. Incorrect connection
    between the module connector and the motherboard header will make the device unable to work
    or even damage it.
    For  AC97 Front Panel Audio: For HD  Front Panel Audio:
    •The front panel audio header supports HD audio by default. If your chassis provides an
    AC97 front panel audio module, refer to the instructions on how to activate AC97 functioninality
    via the audio software in Chapter 5, Configuring 2/4/5.1-Channel Audio.
    •Audio signals will be present on both of the front and back panel audio connections
    simultaneously. If you want to mute the back panel audio (only supported when using an HD
    front panel audio module), refer to Chapter 5, Configuring 2/4/5.1-Channel Audio.
    •Some chassis provide a front panel audio module that has separated connectors on each
    wire instead of a single plug. For information about connecting the front panel audio
    module that has different wire assignments, please contact the chassis manufacturer.
    Pin No. Definition
    1 MIC
    2 GND
    3 MIC Power
    4NC
    5 Line Out (R)
    6NC
    7NC
    8 No Pin
    9 Line Out (L)
    10 NC
    1 2
    9 10
    Pin No. Definition
    1 MIC2_L
    2 GND
    3 MIC2_R
    4 -ACZ_DET
    5 LINE2_R
    6 FAUDIO_JD
    7 GND
    8 No Pin
    9 LINE2_L
    10 FAUDIO_JD 
    						
    							GA-945GCM-S2L/S2C Motherboard - 28 -
    Pin No. Definition
    1 Power (5V)
    2 Power (5V)
    3 USB DX-
    4USB DY-
    5 USB DX+
    6 USB DY+
    7 GND
    8 GND
    9 No Pin
    10 NC
    •Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB header.
    •Prior to installing the USB bracket, be sure to turn off your computer and unplug the
    power cord from the power outlet to prevent damage to the USB bracket.
    14) F_USB1/F_USB2 (USB Headers)
    The headers conform to USB 2.0/1.1 specification. Each USB header can provide two USB ports
    via an optional USB bracket. For purchasing the optional USB bracket, please contact the local
    dealer.
    13) SPDIF_O (S/PDIF Out Header)
    This header supports digital S/PDIF out. Via an optional S/PDIF out cable, this header can connect
    to an audio device that supports digital audio in. For purchasing the optional S/PDIF out cable,
    please contact the local dealer.
    1
    9
    2 101
    Pin No. Definition
    1 Power
    2 SPDIFO
    3 GND
    Pin 1 (the red wire) of the S/PDIF out cable must align with pin 1 of the SPDIF_O header.
    Incorrect connection may render the device unusable or even result in damage to the
    device. 
    						
    							Hardware Installation - 29 -
    Open: Normal
    Short: Clear CMOS Values
    15) CLR_CMOS (Clearing CMOS Jumper)
    Use this jumper to clear the CMOS values (e.g. date information and BIOS configurations) and
    reset the CMOS values to factory defaults. To clear the CMOS values, place a jumper cap on the
    two pins to temporarily short the two pins or use a metal object like a screwdriver to touch the two
    pins for a few seconds.
    •Always turn off your computer and unplug the power cord from the power outlet before
    clearing the CMOS values.
    •After clearing the CMOS values and before turning on your computer, be sure to remove
    the jumper cap from the jumper. Failure to do so may cause damage to the motherboard.
    •After system restart, go to BIOS Setup to load factory defaults (select Load Optimized
    Defaults) or manually configure the BIOS settings (refer to Chapter 2, BIOS Setup, for
    BIOS configurations).
    16) CI (Chassis Intrusion Header)
    This motherboard provides a chassis detection feature that detects if the chassis cover has been
    removed. This function requires a chassis with chassis intrusion detection design.
    Pin No. Definition
    1 Signal
    2 GND
    1 
    						
    							GA-945GCM-S2L/S2C Motherboard - 30 - 
    						
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