INSTALLATIONS
MAT-880 User’s Manual 19
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