My 2412 connected beautifully - just plugged from the MiniDisplay port on the computer to the Monitor, and VOILA - beautiful! BUT - with the 2414, I am using the cable that came with the Monitor to connect from the MiniDisplay Port on the MBA computer to the DP port on the Monitor. I am getting a message that there is no signal coming from the computer. Likewise, my computer does not see any monitor. I am frustrated now. What can be wrong?

Thanks