Only 3 of 4 X290 detected

[bananabeast]

Ok, thank you for your answer.

Unfortunately, there is no way for us to order it like that because of the size of the cards:
http://i.imgur.com/i73Hb7b.jpg
http://i.imgur.com/691VgeQ.jpg
http://imgur.com/i73Hb7b,691VgeQ,tLRKt6I#2