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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 / Speed Control 3 Sense 4 Speed Control CPU_FAN: Pin No. Definition 1 GND 2 Speed Control 3 Sense 4 +5V SYS_FAN: 1 CPU_FAN SYS_FAN 5) NB_FAN (North Bridge Fan Header) Connect the North Bridge fan cable to this header. The fan header has 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. • Be sure to connect fan cables to the fan headers to prevent your CPU, North Bridge and system from overheating. Overheating may result in damage to the CPU/North Bridge or the system may hang. • These fan headers are not configuration jumper blocks. Do not place a jumper cap on the headers. Pin No. Definition 1 GND 2 +12V 3 NC 1 1 GA-MA78GM Series Motherboard - 28 - 7) 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.) 2 40 1 39 6) 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. 2 1 34 33 - 29 - Hardware Installation 9) 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 MPDSystem Status LED S0 On S1 Blinking S3/S4/S5 Off 8) SATA2_0/1/2/3/4 (SATA 3Gb/s Connectors) 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. The AMD SB700 controller supports RAID 0, RAID 1, RAID 10 and JBOD. Refer to Chapter 5, "Configuring SATA Hard Drive (s)," for instructions on configuring a RAID array. Pin No. Definition 1 GND 2 TXP 3 TXN 4 GND 5 RXN 6 RXP 7 GND • A RAID 0 or RAID 1 configuration requires at least two hard drives. If more than two hard drives are to be used, the total number of hard drives must be an even number. • A RAID 10 configuration requires at least four hard drives and the total number of hard drives must be an even number. Please connect the L-shaped end of the SATA 3Gb/s cable to your SATA hard drive. 7 1 7 1 SATA2_2 SATA2_0 SATA2_3 SATA2_1 7 1 1 7 1 7 SATA2_4 1 GA-MA78GM Series Motherboard - 30 - 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 assignments and the pin assignments are matched correctly. HD+ RESNC SPEAKMSG+ PW+ Message/Power/ Sleep LED Speaker SPEAK+ Power Switch Hard Drive Activity LED Reset Switch 19 20 HDRES+ MSGPW- 1 2 • PW (Power Switch, Red): 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, Orange): 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. Refe...