ASROCK 870ICAFE User Manual page 25

Chassis and Power Fan Connectors
(4-pin CHA_FAN1)
(see p.11 No. 23)
FAN_SPEED_CONTROL
(3-pin CHA_FAN2)
(see p.11 No. 22)
(3-pin CHA_FAN3)
(see p.11 No. 2)
(3-pin PWR_FAN1)
(see p.11 No. 10)
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.11 No. 6)
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.11 No. 5)
ATX Power Connector
(24-pin ATXPWR1)
(see p.11 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.
Please connect the fan cables
to the fan connectors and
match the black wire to the
GND
+12V
ground pin.
CHA_FAN_SPEED
GND
+12V
CHA_FAN_SPEED
GND
+12V
PWR_FAN_SPEED
Please connect the CPU fan
cable to this connector and
match the black wire to the
ground pin.
1 2 3 4
Pin 1-3 Connected
Please connect an ATX power
12 24
supply to this connector.
1 13
20-Pin ATX Power Supply Installation
2 5 2 5 2 5 2 5 2 5
3-Pin Fan Installation
24
12
13
1