Chapter 4 Motherboard Connections; Power Connections - Supermicro SuperServer 110P-WTR 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

Two power connections supply the motherboard and several more supply for onboard devices.
ATX Power Supply Connector
The 24-pin power supply connector (JPWR3) meets the ATX SSI EPS 12V specification. You
must also connect the 8-pin (JPWR1) and 4-pin (JPWR2) processor power connector to the
power supply.
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
Required Connection
50
Chapter 4: Motherboard Connections
Motherboard
before installing or removing components.
Definition
+3.3V
+3.3V
Ground
+5V
Ground
+5V
Ground
PWR_OK
5VSB
+12V
+12V
+3.3V
Manual.