ASROCK B550D4ID-2T/CG User Manual page 46

ATX 12V Power
Connectors
(8-pin ATX12V1)
(8-pin ATX12V2)
ATX 4-PIN Power
Connector
(4-pin ATX4PIN1)
40
GND
1
4
5
8
12V
1
2
ATX_PG GND
+5VSB
PSON#
4
3
The motherboard provides
one or two 8-pin 12V power
connectors which are required
inputs for either DC-IN 12V or
ATX +12V power sources.
When using ATX power, it is
necessary to use a 24pin-to-
4pin power cable to connect
between the 24pin power
connector of PSU and the
ATX4PIN1 connector on the
motherboard for power supply
and signal communication.
The motherboard provides one
4-pin power/signal connector
which is a required input for
ATX power source.
When using ATX power, it is
necessary to use a 24pin-to-
4pin power cable to connect
between the 24pin power
connector of PSU and the
ATX4PIN1 connector on the
motherboard for power supply
and signal communication.
For DC-IN 12V application,
it is not necessary to use this
ATX 4-PIN power connector.
*Caution: Misconnection between
the ATX4PIN1 and the SATA_PWR1
connectors may permanently damage
the motherboard.