Yeah, it's there. I would contact MSI and make sure that the BIOS version that you have supports it; it may have been added after your board was flashed. There should be a sticker on the BIOS chip that'll tell you the firmware version.
If it's not supported on your current BIOS version, you could RMA the board or get a new BIOS chip from somewhere like BIOSman (I've had good experience with them) with the latest firmware.