[App_rpt-users] Small System Recommendations

All, I am looking for recommendations on small, preferably inexpensive, systems that are capable of running on 12v to take advantage of the redundant power systems at our sites. I would like it to support at least two nodes running simpleusb as I don't need the DSP processing capabilities. The idea is that these systems would be connected to a port on an existing controller. I expect that HP thin clients are going to be my best bet, but there seem to be many different models so I don't know where to begin. Suggestions or thoughts? Robert N5QM