Chapter 4 Motherboard Connections; Power Connections - Supermicro A+ Server AS -1015SV-WTNRT 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

Power Connections
Main Power Supply Connector (JPWR1)
The primary power supply connector (JPWR1) is an ATX power connector that the power
supply plugs into directly.
12V 8-pin Auxiliary Power Connector (JPWR2)
JPWR2 is an 8-pin ATX power input to provide auxiliary power to the processor. Refer to the
table below for pin definitions.
Chapter 4
Chapter 1. More detail can be found in the
Appendix A
ATX Power 24-pin Connector
Pin Definitions
Pin# Definition Pin#
13 +3.3 V 1
14 -12 V 2
15 Ground 3
16 PS_ON 4
17 Ground 5
18 Ground 6
19 Ground 7
20 Res (NC) 8
21 +5 V 9
22 +5 V 10
23 +5 V 11
24 Ground 12
12V 8-pin Power Connector
Pin Definitions
Pins Definition
1 through 4 Ground
5 through 8 +12 V
53
Chapter 4: Motherboard Connections
Motherboard Manual.
before installing or removing components.
Definition
+3.3 V
+3.3 V
Ground
+5 V
Ground
+5 V
Ground
PWR_OK
5VSB
+12 V
+12 V
+3.3 V