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ATX 12V Power
Connector
(8-pin ATX12V1)
(see p.6, No. 3)
SATA Power Connector
(DC-IN mode)
(4-pin HDDPWR1)
(see p.6, No. 16)
Intelligent Platform
Management Bus header
(4-pin IPMB_1)
(see p.6, No. 2)
EPYC3451D4I2-2T / EPYC3351D4I2-2T
GND
1
4
5
8
12V
GND
+5V
4
2
1
3
GND
+12V
No connect
IPMB_SCL
GND
IPMB_SDA
The motherboard provides one
8-pin 12V power connector
which is a required input for
either DC-IN 12V or ATX
+12V 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
ATX12V2 connector on the
motherboard for power supply
and signal communication.
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
ATXPWR1 and the HDDPWR1 con-
nectors may permanently damage the
motherboard.
This 4-pin connector is used
to provide a cabled baseboard
or front panel connection for
value added features and 3rd-
party add-in cards, such as
Emergency Management cards,
that provide management
features using the IPMB.
19
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