http://www.ascendtech.us/acer-aspire-sa90-mbs7109002-motherboard_i_mbacembs7109002.aspxThe front of your computer is the Front Panel.
The area of pins on the motherboard, that the main wires from the Front panel go to, is the Front Panel header.
Looking at the Front Panel header it is parallel to the outside edge on the bottom/right of the motherboard.
13 pin header.
6 across the Top row with 1 pin missing, 7 across the Bottom row.
Top row is numbered EVEN
Starting on LEFT side coming across to the Right, Top row;
Pins 2, 4, 6, 8, No Pin, 12, and 14.
Pins 2 and 4 have a Green area
Pins 6 and 8 have a Red area
No Pin 10.
Pins 12, and 14 have a Yellow area
Bottom row is numbered ODD.
Starting on LEFT side coming across to the Right, Bottom row;
Pins 1, 3, 5, 7, 9, 11, and 13.
Pins 2 and 4 have a Green area
Pins 6 and 8 have a Red area
No Pin 10.
Pins 12 and 14 have a Green area.
A) Pins 2 and 4 in the Green area (Top left) are for the Power On LED
Pin 2 is for the Positive ( + ) wire.
If the Power On LED is dim when the computer is on, switch the wires around.
B) Pins 6 and 8 in the Red area are for the Power On switch.
C) Pins 12 and 14 are N/C. Not Connected
D) Pins 1 and 3 in the Yellow area, are for the HarDDrive activity LED light.
Pin 1 is for the Positive wire.
If the HDD LED is dim when the harddrive is active, switch the wires around.
E) Pins 5 and 7 in the Purple area, are for a Reset switch, IF a Reset switch is used.
F) Pins 9, 11, and 13 are N/C.
(Pin 9 is 5 Volts DC. Used by the factory for testing)
Regards,
joecoolvette
(I thought the internal speaker was that round little 'buzzer', below the bottom white PCI slot, (PCI 2), and close to the edge of the motherboard )
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