Anyone Have A Asus An78x E Deluxe And Firewire

HI ALL

i have the following

asus a7n8x e deluxe motherboard

zorro case with firewire on it

the problem is the wired pins from the case dont seem to match the ones on mobo so i aint sure what goes where

i have spent hours looking on the net for the answer with no joy


this is my last port of call

right
pins on mobo are
starting with number one pin as top left

tpa0- gnd tpb0- +12v gnd <<<<<<< top row

tpa0+ gnd tpb0+ +12v <<<<<<< bottom row



pins on the case firewire are

tpa+
tpa-
tpb+
tpb-
gnd
vg
vp

now i think i can work out the tpa ones lol

but which one of the 3 grounds do i put the 1 ground into

and what do vg and vp stand for and where do they go


cheers