Hi,
regarding motherboards:
I have some rigs sitting on wood, I guess I should ground the motherboard to the PSU case, right? i guess if i throw a cable between some mounting hole to the psu case it will be enough...
regarding psus:
If I have several PSUs to feed a single rig, I guess I should ground them together, how to do so properly? a single cable connected between the two psu cases will be enough?