Gigabyte GA-990FXA-UD3 User Manual page 24

3/4/5) CPU_FAN/SYS_FAN1/SYS_FAN2/PWR_FAN (Fan Headers)
The motherboard has a 4-pin CPU fan header (CPU_FAN), a 4-pin (SYS_FAN1) and a 3-pin (SYS_FAN2)
system fan headers, and a 3-pin power fan header (PWR_FAN). Most fan headers possess a foolproof
insertion design. When connecting a fan cable, be sure to connect it in the correct orientation (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.
• Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheat-
ing. 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.
6) SATA3 0/1/2/3/4/5 (SATA 6Gb/s Connectors, Controlled by AMD SB950 South Bridge)
The SATA connectors conform to SATA 6Gb/s standard and are compatible with SATA 3Gb/s and SATA
1.5Gb/s standard. Each SATA connector supports a single SATA device. The AMD SB950 South Bridge
supports RAID 0, RAID 1, RAID 5, RAID 10, and JBOD. Refer to Chapter 3, "Configuring SATA Hard Drive(s),"
for instructions on configuring a RAID array.
• 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 5 configuration requires at least three hard drives. (The total number of hard drives does
not have to be an even number.)
• A RAID 10 configuration requires four hard drives.
Hardware Installation
CPU_FAN:
Pin No. Definition
1
CPU_FAN
SYS_FAN1:
Pin No. Definition
1
SYS_FAN1
SYS_FAN2/PWR_FAN:
Pin No. Definition
1
1
SYS_FAN2 PWR_FAN
SATA3
0 2 4
1 3 5
- 24 -
1 GND
2 +12V / Speed Control
3 Sense
4 Speed Control
1 GND
2 +12V / Speed Control
3 Sense
4 Reserve
1 GND
2 +12V
3 Sense
Pin No. Definition
1 GND
2 TXP
3 TXN
4 GND
5 RXN
6 RXP
7 GND