are you sure about the RED ports being 2 6g and 2 3g? because Rog.Asus list em otherwise,
both are 6g
with the black being the 3g
From http://rog.asus.com/motherboard/gene/maximus-v-gene/
2 x SATA 6Gb/s port(s), red
2 x SATA 3Gb/s port(s), black
1 x eSATA 3Gb/s port(s), red
1 x...