ASROCK FM2A75M-HD+ Handbuch Seite 25

CPU Fan Connector
(4-pin CPU_FAN1)
(see p.1 No. 3)
ATX Power Connector
(24-pin ATXPWR1)
(see p.1 No. 5)
ATX 12V Power Connector
(4-pin ATX12V1)
(see p.1 No. 1)
Serial port Header
(9-pin COM1)
(see p.1 No. 20)
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FAN_SPEED_CONTROL
CPU_FAN_SPEED
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.
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.
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Please connect the CPU fan
cable to the connector and
+12V
match the black wire to the
GND
ground pin.
1 2 3 4
Pin 1-3 Connected
3-Pin Fan Installation
Please connect an ATX power
12 24
supply to this connector.
1 13
20-Pin ATX Power Supply Installation
Please connect an ATX 12V
power supply to this connector.
This COM1 header supports a
RRXD1
DDTR#1
serial port module.
DDSR#1
CCTS#1
1
RRI#1
RRTS#1
GND
TTXD1
DDCD#1
24
12
13
1