Small Portable Brick Computer Without Display

Have been seeking a small personal or embedded computer. The market is getting close but is still not there.

Want "laptop" or "palmtop" with power to run full modern Linux/Windows, but no screen nor keyboard nor mouse. All entry I/O attached via USB.

- Ethernet (up to Gigabit speeds)
- USB 2.0+ (4 port)
- HDMI
- eSATA or microSD (maybe)
- 6hr+ battery. No fan.
- Form factor of small brick like book/tablet. Under one kg.
- Power over Ethernet (PoE) 802.3af, or power from a USB outlet.
http://en.wikipedia.org/wiki/Power_over_Ethernet

No integrated display. One gets to choose the display. Most importantly one gets to choose to not to carry a display. Use with HMD or projector (mini LED projector) or display (like hotel LED/LCD TV, or desktop monitor).

No Wifi or other RF like 4G. RF is easy to attach via USB. The same attachment ease applies to external DVD/CD and other media and I/O. HDMI and eSATA can provide high bandwidth I/O.

Battery is for riding out glitches and outages, for portability, and for peaking when USB and PoE charging are insufficient in their continuous rating.