ASRock B550M/ac User Manual - Page 39

Warning: Please make, sure that the power cable, connected is for the CPU, and not the graphics,

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Page 39 highlights

CPU Fan Connector (4-pin CPU_FAN1) (see p.7, No. 2) ATX Power Connector (24-pin ATXPWR1) (see p.7, No. 7) ATX 12V Power Connector (8-pin ATX12V1) (see p.7, No. 1) Serial Port Header (9-pin COM1) (see p.7, No. 22) 4 3 21 GND FAN_VOLTAGE CPU_FAN_SPEED FAN_SPEED_CONTROL 12 24 1 13 8 5 4 1 RRXD1 DDTR#1 DDSR#1 CCTS#1 1 RRI#1 RRTS#1 GND TTXD1 DDCD#1 This motherboard provides 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 provides 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 provides an 8-pin ATX 12V power connector. To use a 4-pin ATX power supply, please plug it along Pin 1 and Pin 5. *Warning: Please make sure that the power cable connected is for the CPU and not the graphics card. Do not plug the PCIe power cable to this connector. This COM1 header supports a serial port module. English 32

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English
32
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.7, No. 2)
°is 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.
ATX Power Connector
(24-pin ATXPWR1)
(see p.7, No. 7)
°is 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.
ATX 12V Power
Connector
(8-pin ATX12V1)
(see p.7, No. 1)
°is motherboard
provides an 8-pin ATX
12V power connector. To
use a 4-pin ATX power
supply, please plug it along
Pin 1 and Pin 5.
*Warning: Please make
sure that the power cable
connected is for the CPU
and not the graphics
card. Do not plug the
PCIe power cable to this
connector.
Serial Port Header
(9-pin COM1)
(see p.7, No. 22)
°is COM1 header
supports a serial port
module.
CPU_F
FAN_VOLTAGE
GND
AN_SPEED
FAN_SPEED_CONTROL
4
3
2
1
12
1
24
13
4
1
8
5
CCTS#1
RRTS#1
DDSR#1
DDTR#1
RRXD1
GND
TTXD1
DDCD#1
1
RRI#1