Do yourself a favor and stay away from usb mics and adapters.
They're made mostly for podcasting (internet chat radio)
Not as good analog>digital converters (cheaper chips)
You'll have problems monitoring for track overlays
you wont be able to use anything else with it (asio only lets you use 1 device at a time)
short usb cords will put more computer noise into recordings
Get a regular usb interface and regular mics.