ASROCK Fatal1ty 990FX Killer Quick Installation Manual page 28

CPU Fan Connectors
(4-pin CPU_FAN1)
(see p.1, No. 3)
(3-pin CPU_FAN2)
(see p.1, No. 4)
ATX Power Connector
(24-pin ATXPWR1)
(see p.1, No. 7)
ATX 12V Power
Connector
(8-pin ATX12V1)
(see p.1, No. 2)
SLI/XFIRE Power
Connector
(4-pin SLI/XFIRE_
PWR1)
(see p.1, No. 23)
Infrared Module Header
(5-pin IR1)
(see p.1, No. 24)
24
FAN_SPEED_CONTROL
CPU_FAN_SPEED
+12V
GND
1 2 3 4
GND
+12V
CPU_FAN_SPEED
12 24
1 13
8 5
4 1
IRTX
+5VSB
DUMMY
1
GND
IRRX
This motherboard pro-
vides a 4-Pin CPU fan
(Quiet Fan) connector.
If you plan to connect a
3-Pin CPU fan, please
connect it to Pin 1-3.
This motherboard pro-
vides a 24-pin ATX power
connector. To use a 20-pin
ATX power supply, please
plug it along Pin 1 and Pin
13.
This motherboard pro-
vides an 8-pin ATX 12V
power connector. To use a
4-pin ATX power supply,
please plug it along Pin 1
and Pin 5.
Please connect this
connector with a hard
disk power connector
when two graphics cards
are installed on this
motherboard.
This header supports an optional
wireless transmitting and
receiving infrared module.