the headers are there just that they forgot to include the expansion plate in the bundle
But ensure that the pinout are correctly aligned. check the manual before ordering.
see page 1-16 of
manual as this is why I have stayed with Abit again on new board for my new QX6850
?? all mobos but this one have a usb header with package

Bios sipped with board will be 11, the last official one. Try
BTA Bios for updated Betas i'm running 12.06 which is good.