I really need help with this, I'm not a computer expert. So I bought a PC years ago and it has an APU of AMD A4-3400 and I just recently bought a NVIDIA GeForce GT 1030. The question is, I use VGA connector for my APU and DVI-D for my GPU. Do I still need to plug my VGA which is the APU together with GPU which is the DVI-D connector, or only the DVI-D for the GPU. Will it make any difference if I plug both to my monitor?