USB-Serial converter

I am looking at using a USB-serial converter with Neutrino, specifically a
device called “Edgeport” made by Inside Out Networks. As I have never
written any software before that uses USB, I would be interested if anyone
would like to comment on their experiences with this or similar devices, or
with using a USB interface in general under Neutrino. Is it simple, obscure,
a big hassle? Enquiring minds want to know.