Not sure about compatability with the XFX card. I had expected them to all be compatable but now with the motherboard cable not working...
I have not found one for sale on the XFX site and the ones linked are HIS and Sapphire.
I have submited a quiery to XFX, awaiting a reply.
Crossfire cables are usually universal, they have the same teeth to connect.
Sounds like if ASUS shipped an Xfire cable in the box, it's missing, and the one you have is for SLi, since the MoBo supports both. The Xfire bridges are all the same, but they aren't the same as SLi bridges.