maybe i phrased that wrong, i was just pointing out that it does not hook up to a computer like people were suggesting. and just speaking from experience (i have 2 of them sitting in the studio right now) just to convert analog to digital and vise versa there are easier and better ways to do it.
the difference between using something like an mbox and an ultragain w/ a usb converter is that the mbox is more stable, the ultragains are prone to pots going out and various other things, as well as those cheap $40 usb converters (i didn't say lots of money mind you), if you check around many many people have complained about 1 side or the other shorting out after a few months use. and to some people $40 bucks every few months may be worth it, ok.
ultragain + usb converter is not all thats required. the converter is rca to usb. which means you have to buy something else to convert xlr to rca. or you can buy a trs to rca jack for a couple bucks and bypass the ultragain all together. you mise well forget about the optic ports since not to many things other then tv's and dvd players even have them anymore. all in all once you got the whole set up going a $250 mbox and all the stuff to get the ultragain to work is not that far apart cost wise.
my point here is, after the ultrgains failing and having to be fixed several times and going threw 4 of the converters before giving up, i spent $50 bucks on a used 4 channel mixer with a built in usb port and eliminated that whole equation. but that is just how i ended up going, you could spend more or less, go easier or harder, simpler or more technical, as long as it gets the job done thats the main thing.....