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CPU Fan Connectors
(4-pin CPU_FAN1)
(see p.2 No. 5)
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 CPU_FAN2)
(see p.2 No. 6)
ATX Power Connector
(24-pin ATXPWR1)
(see p.2 No. 9)
Though this motherboard provides 24-pin ATX power connector,
it can still work if you adopt a traditional 20-pin ATX power supply.
To use the 20-pin ATX power supply, please plug your power
supply along with Pin 1 and Pin 13.
ATX 12V Power Connector
(8-pin ATX12V1)
(see p.2 No. 2)
Though this motherboard provides 8-pin ATX 12V power connector, it can still work
if you adopt a traditional 4-pin ATX 12V power supply. To use the
4-pin ATX power supply, please plug your power supply along with
Pin 1 and Pin 5.
IEEE 1394 Header
(9-pin FRONT_1394)
(see p.2 No. 32)
Please connect the CPU fan
FAN_SPEED_CONTROL
CPU_FAN_SPEED
cable to the connector and
+12V
GND
match the black wire to the
ground pin.
1 2 3 4
Pin 1-3 Connected
GND
+12V
CPU_FAN_SPEED
Please connect an ATX power
12
24
supply to this connector.
1
13
20-Pin ATX Power Supply Installation
Please connect an ATX 12V
4
8
power supply to this connector.
1
5
4-Pin ATX 12V Power Supply Installation
Besides one default IEEE 1394
RXTPAM_0
GND
port on the I/O panel, there is
RXTPBM_0
+12V
GND
one IEEE 1394 header
(FRONT_1394) on this
1
+12V
motherboard. This IEEE 1394
RXTPBP_0
GND
RXTPAP_0
header can support one IEEE
1394 port.
ASRock A75 Pro4 Motherboard
3-Pin Fan Installation
12
1
4
1
24
13
8
5
31
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