Great. Ok, well basically the gist of it is that model is listed as compatible on corsairs site, however corsair doesn't list in what configuration its supported. In other words its not a definite that buying two sets of those and using all 4 slots with them is completely supported. Asus doesn't list those particular ones with the "R" at the end, but that might just be because those came out after their compatibility list was published. Regardless all of this doesn't matter anyway, since they are most definitely supported with at least 2 chips (which you tried) and even 1 chip I can't imagine 1 chip by itself wouldn't work. So we've ruled that out as to why the board isn't posting.