It does not show in the BIOS at all. The boot order has only SSD or HDD or CD rom. USB cannot be set to boot from, it is not there, even when it works on other PC!.
I even registered on ASUS.com forum and people there have the same question, but the mods over there have no answers yet on this issue.
But is the ASUS P8Z68-V PRO better choice to have for my needs, if I OC the 2600K to do lots of CS5 and video editing, than ASUS P8Z68-V LE?