Intel MAT-880 user manual J5 System Function Connector, Speaker Pins 1, Power LED Pins

INSTALLATIONS

J5: System Function Connector

J5 provides connectors for system indicators that provide light indication of the computer activities and switches to change the computer status. J5 is a 16-pin header that provides interfaces for the following functions.

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 9-11

The power LED indicates the status of the main power switch.

Pin #	Signal Name
9	Power LED
10	NC
11	Ground

ATX Power ON Switch: Pins 5 and 13

This 2-pin connector is an “ATX Power Supply On/Off Switch” on the system that connects to the power switch on the case. When pressed, the power switch will force the system to power on. When pressed again, it will force the system to power off.

Pin #	Signal Name
5	PS_ON
13	Ground

SMI/Hardware Switch: Pins 6 and 14

This connector supports the "Green Switch" on the control panel, which, when pressed, will force the system into the power-saving mode immediately.

Pin #	Signal Name
6	SMI
14	Ground

MAT-880 User’s Manual 19