Chapter 4 Motherboard Connections; Power Connections - Supermicro SuperServer SYS-E302-12D-4C User Manual

Motherboard Connections
This section describes the connections on the motherboard and provides pinout definitions.
Note that depending on how the system is configured, not all connections are required. The
LEDs on the motherboard are also described here. A motherboard layout indicating component
locations may be found in
Please review the Safety Precautions in

4.1 Power Connections

ATX Power Supply Connector
The 24-pin power supply connector (JPWR1) meets the ATX SSI EPS 24-pin specification.
The 8-pin (JPV1) connector is used to provide alternative power for a special enclosure when
the 24-pin ATX power is not in use.
Chapter 4
Chapter 1. More detail can be found in the
Appendix A
ATX Power 24-pin Connector
Pin Definitions
Pin# Definition Pin#
13 +3.3V 1
14 -12V 2
15 Ground 3
16 PS_ON 4
17 Ground 5
18 Ground 6
19 Ground 7
20 Res (NC) 8
21 +5V 9
22 +5V 10
23 +5V 11
24 Ground 12
33
Chapter 4: Motherboard Connections
Motherboard Manual.
before installing or removing components.
Definition
+3.3V
+3.3V
Ground
+5V
Ground
+5V
Ground
PWR_OK
5VSB
+12V
+12V
+3.3V