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ATX 4-PIN Power
Connector
(4-pin ATX4PIN1)
(see p.6, No. 7)
SATA Power Connector
(4-pin SATA_PWR1)
(see p.6, No. 3)
(FOR HDD POWER)
1
2
ATX_PG
GND
+5VSB
PSON#
4
3
1
2
GND
GND
+5V
+12V
3
4
B550D4ID-2L2T
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.
Please use a SATA power cable
to connect this SATA Power
Connector and your SATA
HDD for supplying power
from the motherboard, when
using DC-IN mode without
SATA power supply.
*Caution: Misconnection between
the ATX4PIN1 and the SATA_PWR1
connectors may permanently damage
the motherboard.
23
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