mem slots and sata

asus told me the mem slots are labled backwards. the two blue slots are 1&2 the bkack slot is#1. this makes sense if you think about it. also the a7n8x dl has a jumper to disable SATA raid if your not using it this will speed up your boot

So which slot is #3 then?

the tech rep at ASUS told me they were numbered in reverse. So black would be #3. since the blue slots activate dual ddr mode it makes sense to me. and 1 & 3 are also dual so its the same ie. (1&2-1&3)