Hi, there seems to be some kind of a manufacturing defect with C8H / C8DH boards. Threads / posts about it pile up if you know what you're looking for. I have recently bought one of those boards and had it with the issue on arrival so I'm returning it, but other people do not seem to be so lucky. I have made a short video representing the issue, and there are links to threads (64 pages long thread on Asus forums) about this in the description.
