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Gigabyte GA-B250M-D3H - Internal Connector Pinouts; CPU and System Fan Headers; SATA Express and SATA Connectors

Gigabyte GA-B250M-D3H
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5) SATA EXPRESS (SATA Express Connector)
Each SATA Express connector supports a single SATA Express device. Note: The SATA Express connector
is not compatible with regular SATA devices.
6) SATA3 0/1/2/3/4/5 (SATA 6Gb/s Connectors)
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.
Pin No. 
1 GND
2 TXP
3 TXN
4 GND
5 RXN
6 RXP
7 GND
To enable hot-plugging for the SATA ports, refer to Chapter 2, "BIOS Setup," "Peripherals\SATA And

3/4) CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3 (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.

SYS_FAN1
G.QBOFM
CPU_FAN
G.QBOFM
1
1
SYS_FAN3
G.QBOFM
1
SYS_FAN2
G.QBOFM
1
Pin No. 
1 GND
2 Voltage Speed Control
3 Sense
4 PWM Speed Control
SATA3
SATA3
1 0
3 2
5 4
1
1
1
1
G.QBOFM
G.QBOFM
G.QBOFM
G.QBOFM
7
7
7
7
G.QBOFM
G.QBOFM
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