15
ASRock B75 Pro3-M/MVP Motherboard
English
Chassis Speaker Header
Please connect the chassis
(4-pin SPEAKER 1)
speaker to this header.
(see p.2, No. 19)
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 assign-ments are
matched correctly.
Chassis and Power Fan Connectors
Please connect the fan cables
(4-pin CHA_FAN1)
to the fan connectors and match
(see p.2, No. 18)
the black wire to the ground pin.
CHA_FAN1 supports Fan
Control.
(3-pin PWR_FAN1)
(see p.2, No. 1)
CPU Fan Connectors
Please connect the CPU fan
(4-pin CPU_FAN1)
cable to the connector and
(see p.2, No. 4)
match the black wire to the
ground pin.
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin
CPU fan still can work successfully even without the fan speed control function.
If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this
motherboard, please connect it to Pin 1-3.
3-Pin Fan Installation
Pin 1-3 Connected
(3-pin CPU_FAN2)
(see p.2, No. 5)
+5V
DUMMY
DUMMY
SPEAKER
1
GND
+12V
PWR_FAN_SPEED
GND
+12V
CPU_FAN_SPEED
FAN_SPEED_CONTROL
1 2 3 4
GND
+12V
CPU_FAN_SPEED
