11
Installing the Motherboard
ATX1: ATX 20-pin Power Connector
1
+3.3V
11
+3.3V
2
+3.3V
12
-12V
10
+12V
20
+5V
3
Ground
13
Ground
4
+5V
14
PS ON#
5
Ground
15
Ground
6
+5V
16
Ground
7
Ground
17
Ground
8
PWRGD
18
-5V
9
+5VSB
19
+5V
Pin
Signal Name
Pin
Signal Name
SPK1: Internal speaker
Pin
Signal Name
1
VCC
2
NC
4
Signal
3
Ground
ATX12V: ATX 12V Power Connector
Pin
Signal Name
4
+12V
3
+12V
2
Ground
1
Ground
Front Panel Header
The front panel header (PANEL1) provides a standard set of switch and LED header
commonly found on ATX or micro-ATX cases. Refer to the table below for information: