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Desktop 5130DB-IL User's Manual
Motherboard Connections
This section describes the connections on the C7B250-CB-ML 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 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 12V specification.
8-pin 12V Power Connector
JPV1 is the 12V DC power connector that provides an alternative single power source for
special enclosure when the 24-pin ATX power is not in use.
Chapter 3
ATX Power 24-pin Connector
Pin Definitions
Pin#
Definition
Pin#
13
+3.3V
1
14
-12V
2
15
COM
3
16
PS_ON
4
17
COM
5
18
COM
6
19
COM
7
20
Res (NC)
8
21
+5V
9
22
+5V
10
23
+5V
11
24
COM
12
Required Connection
+12V 8-pin Power
Pin Definitions
Pin#
Definition
1 - 4
Ground
5 - 8
+12V
Required Connection
32
Definition
+3.3V
+3.3V
COM
+5V
COM
+5V
COM
PWR_OK
5VSB
+12V
+12V
+3.3V
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