ASROCK SP55 PRO Installation Manual page 24

System Panel Header
(9-pin PANEL1)
(see p.2 No. 22)
Chassis and Power Fan Connectors
(4-pin CHA_FAN1)
(see p.2 No. 7)
(3-pin CHA_FAN2)
(see p.2 No. 8)
(3-pin CHA_FAN3)
(see p.2 No. 12)
(3-pin PWR_FAN1)
(see p.2 No. 38)
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.2 No. 37)
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. 6)
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.
2 4 2 4 2 4
2 4 2 4
This header accommodates
several system front panel
functions.
Please connect the fan cables
to the fan connectors and
match the black wire to the
ground pin.
Please connect a CPU fan cable
4
to this connector and match
3
2
the black wire to the ground pin.
1
12 24
Please connect an ATX power
supply to this connector.
1 13
20-Pin ATX Power Supply Installation
ASRock P55 Pro Motherboard
Pin 1-3 Connected
3-Pin Fan Installation
12
1
24
13