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I cannot tell what type of mechanism it is using, however once you find out and post it here it would help.

Since there is a list of what drive mechanisms work with OS X, iTunes and iDVD.

Toast will usually see almost every external CD or DVD burner. 🙂
 
Check the makers website and see if it dose work on a mac, sometimes they will say it dose not work (since it dose not have a mac burnning software) but it will with toast.
 
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