Intel IB850 User Manual
Page 27
INSTALLATIONS
IB850 User’s Manual
23
J1: System Function Connector
J1 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 provid es 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