Upgrading a ROG G20CB, which came with the GTX970 GPU and two external PS's. I have installed a GTX1070 GPU and connected it to the appropriate PS. This mother board doesn't have a JDC11 jumper to move. So I just put the card in, reassembled, plugged the computer in and she fired right up and seems to be working fine. Is there something else I should have done with other jumpers? I don't recall which position they were in. Would the existing PS's be sufficient?

Thanx in advance for your help,
BaJ