You beat me…that what i wanted to talk about on my next post, i already saw that in MMTool.
One thing…The latest Bios for Asus P8Z77-V LE Plus is 910 and not 901 !!!
I will upload the same but with 910 Bios version and edit this post.
EDIT: Attached files from the Asus 910 Bios:
MarvellAHCI Rom: 33ko
MarvellEFIDXE uncompressed: 3Ko
It feels to me something like this Marvell 9120 chip had been truncated to have only the necessary inside to provide one external & one internal port on the motherboard.