Gigabyte has the manual for the GA-73PVM-S2H on the product support site:
http://www.gigabyte.com/products/product-page.aspx?pid=2691#manual . The full manual is near the bottom of the list. The direct link to the English version of the manual is
http://download1.gigabyte.us/Files/Manual/motherboard_manual_ga-73pvm-s2h_e.pdf . The Motherboard Installation Guide at the top of the list is a generic manual for all motherboards.
The front panel connections are shown on page 28 of the manual. There are two lines of pins. From left to right, the inside line of pins are the Power LED +, Power LED -, Power Switch +, Power Switch -, then the Case Speaker +, Case Speaker -. (The speaker - is next to a Case Fan connector; so there are a couple of blank spots between the speaker + and - pins.) On the line of pins at the edge of the board, again from left to right: HD LED +, HD LED -, Reset Switch -, Reset Switch + . There is no contact on the last pin in this group.
I hope this helps.
Cindy Wells