Just wanna make sure Borg have always, and still do plasma dmg straight up right?
Plasma and Kinetic. Plasma form the beam weapons and Beam DoT's and form the torpedo DoT's, kinetic from the initial torpedo impact and I beleive (though may be mistaken) the new cutting beam attack (looks like but not to be confused with tachyon beam) does kinetic damage.
Now I said in your other thread they do Plasma damage, pay attention or I'll have to give you extra homework! No talking in back either!