I would not recommend the E-MU 0404 USB for use with an Aspire One (or laptops in general!) - my experience with that combo was lots of clicks and pops, no matter how much I tweaked the system (removing tray icons, minimal video, etc., etc.). It has also been troublesome with other laptops I've tried as well. It's utterly perfect on my desktop system, and it works beautifully as an analog-of-sorts preamp (like the UA-5, there's an A->D->A conversion, but you'd never notice it when listening to a recording).