Capture in PrPro is ONLY thorugh FireWire/iLink/IEEE-1394, and not USB. OTOH, with many versions of Dazzle, there is a program, that should allow it to capture. Once, Pinnacle/AVID and Dazzle were together in a lot of bundles. I do not know if that is still the case. Going back many years, few Pinnacle owners ever got their Dazzle devices to work, even with the bundled Pinnacle Studio. The Pinnacle forums were littered with attempts to get the Dazzle devices to work. You might want to go there and do some research, as perhaps a fix was discovered, since I last saw that forum.
Good luck, and sorry for the bad news.
Old forum message, message now gone, but here's the summary - I have not used, only made note of the product "Matt with Grass Valley Canopus in their tech support department stated that the 110 will suffice for most hobbyist. If a person has a lot of tapes that were played often the tape stretches and the magnetic coding diminishes. If your goal is to encode tapes in good shape buy the 110, if you will be encoding old tapes of poor quality buy the 300"
ADS Pyro http://www.adstechnologies.com
I have been seeing some negative reviews of the ADS Pyro, and from some fans of it, in the past. Not sure what is up with ADS. I have never used this unit, so cannot directly comment.
Personally, I highly recommend the Canopus/Grass Valley 110, or even more, the 300. The 300 IS more expensive, but offers TimeBase corrections at Capture, and that can save hours of post production work, so the cost might well disappear vs the editor's time.