Gigabyte GA-IMB1900TN - Page 13

2/3) CPU_FAN/SYS_FAN (Fan Headers)
All fan headers on this motherboard are 4-pin. 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 speed control function requires the use of a 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
overheating. Overheating may result in damage to the CPU or the system may hang.
• Thesefanheadersarenotcongurationjumperblocks.Donotplaceajumpercapontheheaders.
SYS_FAN
DEBUG
PORT
G.QBOFM
1
CPU_FAN:
Pin No. Denition
1 GND
2 +12V
3 Sense
4 Speed Control
SYS_FAN:
Pin No. Denition
1 GND
2 Voltage Speed Control
3 Sense
4 PWM Speed Control
CPU_FAN
4) SATA2 0/1 (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.
Pin No. Denition
1 GND
2 TXP
3 TXN
4 GND
5 RXN
6 RXP
7 GND
DEBUG
PORT
G.QBOFM
17
DEBUG
PORT
G.QBOFM
1
DEBUG
PORT
G.QBOFM
17
1) ATX_12V (2x2 12V Power Connector)
This connector can be used to input power when the DC power jack on the rear panel is not connected.
However, if the DC power jack is connected, this connector can only be used to output power.
When used to input power:
Pin No. Denition
1 GND
2 GND
3 +12V
4 +12V
4
3
2
1
When used to output power:
Pin No. Denition
1 GND
2 GND
3 DC_OUT
4 DC_OUT
or
HDD LED
RESET SW
HDD LED
RESET SW
with
HDD LED
RESET SW
HDD LED
RESET SW
a
r
NOTE: The two connectors cannot be used simultaneously as a source of power input.
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