I have a Dell 7810 with a W5100 video card. I am trying to drive 4 HDMI displays but the fourth will not activate. I was using 4 passive adapters so I bought 4 active adapters that are certified by AMD. I have tried multiple configurations such as all active, 2 active 2 passive, 3 passive 1 active, 3 active 1 passive, all passive and NONE will allow the 4th become active. It will see that it is connected but it will not make it active.