Hi, I am using 3 ATI FirePro 2460 Multimonitor cards each driving 4 monitors & has mini DP slots. I have lost 2 cards in less than 5 months. I have used them for over 4 years with no issue. I am getting current ( Positive test light using a tester ) at the male tip of Mini DP data cable that comes from monitors & goes into the female slot of the cards. This happens only in two cables out of 12. Others no current. What does this mean ? Also I am getting minor shock when touching the chassis of the CPU. If I turn off the power of all monitors & keep CPU power on, then I don't get any shock. So definitely monitors are causing this problem. The power source to everything comes from the same one outlet. So what is going on & is this issue causing the graphics cards to fail ? These are all low profile fanless ( No cooling fan ) cards using just few watts of power.