ASROCK B550D4ID-2L2T User Manual page 28

Server/workstation motherboard
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NCSI Header
(9-pin NCSI1)
(see p.6, No. 2)
PWM Configuration
Header
(3-pin PWM_CFG1)
(see p.6, No. 23)
ATX 12V Power
Connectors
(8-pin ATX12V1)
(see p.6, No. 4)
(8-pin ATX12V2)
(see p.6, No. 5)
22
1
1
GND
1
4
5
8
12V
The onboard NCSI header is
used for external connections.
This header is used for PWM
configurations.
The motherboard provides 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.

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