Query: Intel SE440BX-2 negative voltage?

[grant_lkml at dodo.com.au (Grant Coady)]

Hi Gang,

The Intel SE440BX-2 measures -5V and -12V, however I can find 
no reference as to which input measures what negative rail.

Before I start hacking the hardware again, perhaps somebody has 
a pointer to this information?  

Thanks,
Grant.