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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 Chapter 1.
Please review the Safety Precautions in Appendix B before installing or removing components.
4.1 Power Connections
Two power connections on the X11SPL-F must be connected to the power supply. The wiring
is included with the power supply.
•
24-pin Primary ATX Power (JPWR2)
•
8-pin Processor Power (JPWR1)
Main ATX Power Connector
The primary power connector (JPWR2) meets the ATX SSI EPS 24-pin specification. You must
also connect the 8-pin (JPWR1) processor power connector to your power supply (see below).
Important: To provide adequate power to the motherboard, connect the 24-pin and the 8-pin
power connectors to the power supply. Failure to do so may void the manufacturer's warranty
on your power supply and motherboard.
Chapter 4
ATX Power 24-pin Connector
Pin Definitions
Pin#
Definition
Pin#
Definition
13
+3.3V
1
+3.3V
14
-12V
2
+3.3V
15
COM
3
COM
16
PS_ON
4
+5V
17
COM
5
COM
18
COM
6
+5V
19
COM
7
COM
20
Res (NC)
8
PWR_OK
21
+5V
9
5VSB
22
+5V
10
+12V
23
+5V
11
+12V
24
COM
12
+3.3V
Required Connection
51
Chapter 4: Motherboard Connections
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