That is the boot from usb option. There is no direct option during boot up to choose which device youd like to boot from and no way to change priority. You have to boot up W8 first then choose boot from usb which restarts the unit set to boot from that particular usb device. Its retarded, I know...
To make matters worse, it seems nothing else wants to boot from usb aside from windows and fedora, but fedora just throws an error 15 if u actually try to do anything. Everything else just boots up W8 as if their wasnt a usb device inplace.

