Hmm, question about "mother boards".
Well, from what I understand, two boards, male and female, get together and have a baby plank. From there, the female board turns into a "mother" of this baby plank, thus resulting in a "mother board".
I hope this helps.
(I know nothing about computers)
“Anna, my strong, terrifying Anna.” -Cas
"You lack the requisite spine and testicular fortitude to study under me" -Elodin