in case anyone else looks this up, I downloaded US-16x08 Driver and Settings Panel V2.10 for Windows and emailed Tascam about the firmware. they said as long as it said Firmware 2.0 in the Settings Panel, I was good. Once I turned it on, I got a message saying I should update to Driver V2.11 for Windows, which was on the download page, I just missed it. a couple clicks later, everything was running well.