ASROCK 770 EXTREME3 Installation Manual page 18

Power LED Header
(3-pin PLED1)
(see p.2 No. 19)
Chassis Speaker Header
(4-pin SPEAKER 1)
(see p.2 No. 17)
Chassis and Power Fan Connectors
(3-pin CHA_FAN1)
(see p.2 No. 20)
(3-pin PWR_FAN1)
(see p.2 No. 37)
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.2 No. 2)
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.
ATX Power Connector
(24-pin ATXPWR1)
(see p.2 No. 8)
1 8 1 8 1 8
1 8 1 8
ASRock
Please connect the chassis
power LED to this header to
indicate system power status.
The LED is on when the system
is operating. The LED keeps
blinking in S1 state. The LED is
off in S3/S4 state or S5 state
(power off).
Please connect the chassis
speaker to this header.
Please connect the fan cables
to the fan connectors and
match the black wire to the
ground pin.
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
3-Pin Fan Installation
Please connect an ATX power
12 24
supply to this connector.
1 13
770 Extreme3 Motherboard