Check out Soekris -OR- WRAP from PC Engines (Score 1)

These are both excellent, low power consumpsion, single board computers. They will both run FreeBSD without trouble. I know the WRAP is capable of POE; not sure about Soekris machines.

http://www.pcengines.ch/wrap.htm
http://www.soekris.com/

Currently running m0n0wall on a WRAP and FreeBSD on a Mini-ITX. Both run like a dream.