TASCAM 1800 Audio Interface

Does anyone have any experience using a the Tascam 1800 audio interface? In windows 8 I can’t seem to see any more than two channels. I’ve checked drivers, settings, windows preferences, and the like but it seems like I keep coming up short. Using a mac I’m able to see all 16 inputs… so I must be missing a detail somewhere. Ideas?

Hi All… please feel free to ignore this question. I’m having a sound card issue… I tried this same interface on another box and it showed up right away. Yeesh.