Atx1: Atx Power Supply Connector; J1 (F_Panel): System Function Connector - American Megatrends MI953 User Manual

INSTALLATIONS

ATX1: ATX Power Supply Connector

11 1
Signal Name
20 10

J1 (F_PANEL): System Function Connector

J1 provides connectors for system indicators that provide light indication
of the computer activities and switches to change the computer status. J2
is a 20-pin header that provides interfaces for the following functions.
Hard Disk Drive LED
Speaker: Pins 1 - 4
This connector provides an interface to a speaker for audio
tone generation. An 8-ohm speaker is recommended.
18
Pin #
3.3V 11
-12V 12
Ground 13
PS-ON 14
Ground 15
Ground 16
Ground 17
-5V 18
+5V 19
+5V 20
Not Defined
Not Defined
Speaker
MI953 User's Manual
Pin # Signal Name
1 3.3V
2 3.3V
3 Ground
4 +5V
5 Ground
6 +5V
7 Ground
8 Power good
9 5VSB
10 +12V
Reset Switch
ATX Power On Switch
Power LED
Pin # Signal Name
1 Speaker out
2 No connect
3 Ground
4 +5V