Supermicro SuperStorage Server 2028R-NR48N - Connector Definitions; Power Connectors

Chapter 5: Advanced Serverboard Setup
5-13
5-6 Connector Denitions
Power Connectors
ATX Power 24-pin Connector
Pin Denitions
Pin# Denition Pin # Denition
13 +3.3V 1 +3.3V
14 -12V 2 +3.3V
15 COM 3 COM
16 PS_ON 4 +5V
17 COM 5 COM
18 COM 6 +5V
19 COM 7 COM
20 Res (NC) 8 PWR_OK
21 +5V 9 5VSB
22 +5V 10 +12V
23 +5V 11 +12V
24 COM 12 +3.3V
Secondary Power Connector
JPW2 and JPW3 must also be
connected to the power supply. See
the table on the right for pin denitions.
Required Connection
+12V 8-pin Power
Pin Denitions
Pins Denition
1 - 4 Ground
5 - 8 +12V
Caution: To provide adequate power supply to the motherboard, be sure to connect
JPW1 and both JPW2 and JPW3 to the power supply. Failure to do so will void the
manufacturer warranty on your power supply and motherboard.
Power Connectors
A 24-pin main power supply connector
(JPW1) and two 8-pin CPU power
connectors (JPW2/JPW3) must be
connected to the power supply to
provide adequate power to the system.
These power connectors meet the SSI
EPS 12V specication. See the table
on the right for pin denitions.