Supermicro SuperServer series - Chapter 3: Motherboard Connections; 3.1 Power Connections

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Chapter 3: Motherboard Connections
Chapter 3
Motherboard Connections
This section describes the connections on the A2SAV-L motherboard and provides pinout
denitions. Note that depending on how the system is congured, not all connections are
required. The LEDs on the motherboard are also described here. A motherboard layout
indicating component locations may be found in Chapter 1.
Please review the Safety Precautions in Appendix A before installing or removing components.
3.1 Power Connections
Main ATX Power Supply Connector
The primary power supply connector (JPW1) meets the ATX SSI EPS 24-pin specication.
ATX Power 24-pin Connector
Pin Denitions
Pin# Denition Pin# Denition
13 +3.3V 1 +3.3V
14 NC 2 +3.3V
15 Ground 3 Ground
16 PS_ON 4 +5V
17 Ground 5 Ground
18 Ground 6 +5V
19 Ground 7 Ground
20 Res (NC) 8 PWR_OK
21 +5V 9 5VSB
22 +5V 10 +12V
23 +5V 11 +12V
24 Ground 12 +3.3V