I honestly dont know. I am in the process of completing the install, and i sure hope not, because I have 3 EBY701s in my install. None of the screens will be powered by the PC, but rather a relay connected directly to the 12v+ and ground lines, with the ACC 12v+ being the activation switch. I decided on this because i did not want to bogg down my system in an way. Also i did it this way since all screens have there own regulators and fuses. Oh gosh you have me so worried now. Also as a note, my PC is no were near the screens.