The Trendnet TU2-ET100 H/W:V4.0R works on 2.x but they are getting hard to find. The TU3-ETG H/W:V1.0R is recognized by 2.2, but I haven't tested extensively. Everyone loves to talk about how much USB nics suck (and they do), but I've used them for low-bandwidth applications- sync interfaces, dsl, etc. and have had little problems. It's helpful to have something in the bottom of your kit that can add a port to an Alix or APU, even if it's a stopgap until you swap the box out.