Intel IB850 user manual J1 System Function Connector, Speaker Pins 1

Models: IB850

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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

IB850 User’s Manual

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Intel IB850 user manual J1 System Function Connector, Speaker Pins 1