Gateway 3250S PC Desktop "intel e210882 motherboard layout" Questions

...intel motherboard D915GAG/D915PSY E210882. The green light on the motherboard is on when plugged in but the power switch does nothing when pushed in. A shop where i had it looked at said the ...

...E210882 / D915GAG. What is the correct connector arrangement for what I assume to be connector S ? It handles the 3 connections from the front cover panel. HHD LED, PWR LED and PWR SW. Each one being ...