At this point based on my research, it seems that there are some units that show some problems with the USB 3.0 ports with the C1 stepping on this board. Due to this, the issue has been fixed in the C2 Stepping on units with revision G74240-402.
In the case that you are having problems with the unit, I recommend you contacting your local Intel® support so that we can provide the assistance and replace the unit if necessary. Keep in mind that the replacement of the board will be for a same board model but it can be a different revision.
Could you possibly jump in and help in this thread: https://communities.intel.com/message/215131#215131
We are now waiting a long time for an answer from Sylvia, respectively from the engineering team.
Thank you very much
I understand your frustration on this matter. I truly apologize for the delay on during this process but I am afraid that the case is still escalated and we have not received feedback yet.
Silvia has been contacting them but so far no new updates. My best recommendation is to keep track of the other thread since it has been escalated and any news will be posted there.
Thank you very much for your fast reply! One of the biggest German PC magazines (http://www.heise.de/ct/) has proposed to choose the Intel DH87RL mainboard to build a fast AND economical computer. Thus, I suppose that many people in German-speaking countries are waiting for a DH87RL with C2 stepping.
This problem is getting worse and worse:
In the German Heise Forum there is now somebody who has a board revision 403 and still has southbridge revision C1: (according to CPU-z)
Is this an error in CPU-z or is Intel using up its own old stock?
@Intel: can somebody finally look into this and clear this issue? It has been unsolved for months now.
All boards with revision 402 will have C2 stepping. We have identified that CPUz is most likely not reporting it correctly.
There is a new revision available 403 that would definitely have the C2 stepping, if you are still getting the C1 stepping, it is a miss read from the software (CPUz).
I understand. I see you have posted this in a different thread so I recommend you following that one to avoid duplicated threads.