Light indicates where to position the cards for best multi gfx cards configurations.

This is an option to be setr using the jumper and there is also an option in the bios.

Check those

Hello.
Both Cards (ROG Mars 760) are seen in the bios as x16 native in Slot 1 + 3.
In Windows i have 4 GTX760 (Quad SLI) as GEN3
The System runs with out Problem during the Win7 instalation and in normal condishions.
Games (Farcry4) runs also in SLI with out trouble.
Is my board really defective ?
Is the anybody with this board and the same dualcard who the Lane LEDs lights up
I have no single gpucard to test the LEDs.
Thanks.

My problems started shortly after the PCI-e LEDs went out. I have noticed that through the window in my case. The lights are quite bright and went out when I was downloading updates from Blizzard. I had no problems booting up till that day.

My computer started developing problems and now I have to replace the board. It is a hardware issue.

R5E is an expensive board. For the amount of money, it has to work as prescribed in the manual. I am surprised with people accepting defects just because the other features are working O.K.

Please consider the board's very complex multilayer design and how many features were accommodated there. All elements of the design are impacting each other. If something goes wrong in one area, there is a high probability that it will change how the associated parts work.

Also, if you put together a system comprising of non defective components, the system should work fine with the automatic settings and without a need of the manual adjustments.

This is, after all, an overclockers' board and should be robust enough to withstand quite a bit of stress. If an element of the board is becoming defective only after a few weeks of use, it tells about the manufacturing quality.