>My G5 dual 2.5 says the optical drive is a HL-DT-ST DVD-RW GWA-4082B > >Is the Pioneer an upgrade to that? Sorry, I don't know, but this is the newest version (the DVR-109). If your G5 dual is a year old or more, it probably has a less capable optical drive in it, because I think that the 109's are only 6-9 months old. >Will it work just like my original yes >plus have the dual capabilities with Toast? I am not sure about Toast, at least for now. But, I'd bet that, if not now dual-layer capable, Roxio will upgrade the capabilities as soon as dual layer media are readily available for purchase. --Steve