A couple of things: I have an ASUS board as well, albeit an older model. I ordered a BT dongle from ebay, took it apart and the receiver on my board apart, then unsoldered the one from the board and replaced it with the one from ebay. RR sees it fine; CF should as well especially if you order one from their approved HW list.
Second, could you report back with how well the Phoenix Audio unit works? That is next on my purchase list.