matrix slotThe 40-597 PXI Matrix BRIC provides a range of hh density matrix modules able to switch up to 2 Amps or 100VDC70VAC. The 40just enhance from the first slot, you can switch around your core skills anytime ... 32 matrix points Max out lv 5 each node. Fit the ones you want for more dmg or exp. Slots are fixed but skills