Radeon R6950 Won't Connect to 3rd monitor

[txbui]

I purchased a Radeon R6950 4 display graphics card. I connected the first 3 monitor to the video card. Any 2 will work, but the 3rd will not. The 3rd display is detected through the Radeon Graphics Catalyst Control Center program (came with the video card), but when I try to activate the 3rd monitor, it won't allow (display must be disabled). I went out and bought a bunch of adapters, cables, dongles, but no luck getting this to work.

Monitor 1: DVI - DVI (There are 2 DVI ports, and I used the bottom one)
Monitor 2: HDMI - HDMI
Monitor 3: Monitor HDMI -> Mini Display cable -> Mini display adapter -> Mini display port of video card.

Any 2 of the able will work, but all three cannot work together at same time. Can anyone help me out what am doing wrong?

 

[amuffin]

you need to get an active display port adapter. Or I believe something like a passive display port adapter.

 

[4745454b]

You need to use the display port to get 3 to work. If your card doesn't have a DP, you're SOL.

 

[a little black duck]

474545b is correct, your 3rd monitor must be connected via the display port. If your 3rd monitor doesn't support dp, you need to use an active display port adaptor. Passive adapters don't work.