Seems it's the end of the line for my 2408mk3's since they require the PCIx card and I've not found any remedy for that. The main problem is now I need some audio interface to pick up the slack. Or is there something I haven't come across regarding the 2408's?
I've been looking at a few things from MOTU, PreSonus, UA, and Audient. But most of that seems like overkill. All I think I really need (right now at least) is a way to feed my Apogee Rosetta to and from the iMac. The 2408 used to fill that gap. At this point, all my analog gear gets routed via a Mackie analog mixer. When I went analog mixer, the 2408's weren't being used as they once were, and are mainly AD (audiowire) and a couple S/PDIF connections (that aren't that necessary at this point).
iMac <-> (?) <-> Rosetta (2 channels AD/DA) <-> mixer <-> outboard gear
Before I start weeding out the contenders, is there some alternative approach I should be considering? My workflow only really requires 2 channels out and back from the Mac these days. That's why these new units under consideration seem overkill to me, but hey, who complains about extra I/O, right?

-Bill