Actualy, you bought memory with a higher clock than what was listed as supported, and even though the motherboard support up to 2333MHz THAT ram module is not listed.
As a matter of fact, the memory module i put on my mother board was 2133Mhz at a latency of 13-13-13 , the motherboard supported 9-9-9, so my modules having a higher latency, the motherboard should have been able to use it. Asus answer was "Logicaly it should've... But it don't..."
I really feel that the QVL is a way for MoBo manufacturer to protect themselves... Even though the brand listed are unattractive "Apacer for example", stick to the QVL or you won't win =/