Thanks for the Motherboard suggestions.
Did my first install on a Intel NUC DCCP847DYE, for FreeBSD 10.0.
Install was painless
+ network: 100%
+ X: 100%, though had to add for mouse: Option "AutoDevices" false
+ Sound: 100%: though only tested the headphone jack off the monitor. Don't have any speakers
+ Mouse, Keyboard, etc...: 100%
Curiously, tried to install package KDE4, was informed no package name kde4 could be installed, XFCE works fine though, haven't attempted GNOME.
The NUC is not ITX but the small form factor is a good substitute.
Look forward to working with this OS.