INSTALLATIONS
IB940 User’s Manual
17
J2: System Function Connector
J2 provides connectors for system indicators that provide light indication
of the computer activities and switches to change the computer status. J1
is a 20-pin header that provides interfaces for the following functions.
Hard Disk Drive LED
Reset
Switch
Not Defined
ATX Power On Switch
SMI / Hardware Switch
Power LED
Speaker
Speaker: Pins 1 - 4
This connector provides an interface to a speaker for audio
tone generation. An 8-ohm speaker is recommended.
Pin #
Signal Name
1 Speaker
out
2 No
connect
3 Ground
4 +5V
Power LED: Pins 11 - 15
The power LED indicates the status of the main power
switch.
Pin #
Signal Name
11 Power
LED
12 No
connect
13 Ground
14 No
connect
15 Ground