Chapter 4 Motherboard Connections; Power Connections - Supermicro SuperServer SYS-741P-TR 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
There is one 24-pin power supply connector (JPWR3) and three 8-pin 12 V DC power
connectors (JPWR1, JPWR2 and JPWR4) on the motherboard to provide adequate power
to your system. Refer to the tables below for pin definitions.
Pin#
13
14
15
16
17
18
19
20
21
22
23
24
Chapter 4
Chapter 1. More detail can be found in the
Appendix A
ATX Power 24-pin Connector
Pin Definitions
Definition Pin# Definition
+3.3V 1 +3.3V
NC 2 +3.3V
Ground 3 Ground
PS_ON 4 +5V
Ground 5 Ground
Ground 6 +5V
Ground 7 Ground
Res (NC) 8 PWR_OK
+5V 9 5VSB
+5V 10 +12V
+5V 11 +12V
Ground 12 +3.3V
Required Connection
Chapter 4: Motherboard Connections
before installing or removing components.
12V 8-pin Power
Pin Definitions
Pin# Definition
1 - 4 Ground
5 - 8 +12V
82
Motherboard Manual.