INSTALLATIONS

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 provides interfaces for the following functions.

Hard Disk Drive LED Not Defined

SMI / Hardware Switch

Speaker

Reset Switch

ATX Power On Switch

Power LED

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

22

IB865 User’s Manual

Page 26
Image 26
Intel IB865, 865G user manual J1 System Function Connector, Speaker Pins 1