Minimal portable PC – USB3, HDMI, 10G Ethernet, 5V (internal battery), 10G RAM, 100G SSD, Under 1kg, Under 15W.

Had previously sought a minimal PC.

http://albertputnam.blogspot.com/2010/12/small-portable-brick-computer-without.html

Still looking.

And, okay, will take an integrated display if one is forced into the package. This is almost a reality with the Microsoft Surface and related tablets. http://en.wikipedia.org/wiki/Surface_Pro_2

USB3 but sadly no devoted Ethernet... but via USB3 is possible.

CuBox is close but not USB3 (yet?). And not yet well Windows supported. http://en.wikipedia.org/wiki/CuBox

But it is very much within technical reach to meet the specs. Staying rather firm about no WiFi, Bluetooth, nor other wireless. Want the assurance of physically disconnecting those interfaces. See separate blog on WiFi tracking.

http://albertputnam.blogspot.com/2013/11/wifi-tracking-any-rf-tracking.html

Basically run full latest modern OSes with all I/O (except network and video and those “could” be USB3 too – if the OSes could accept the USB3 devices at boot).  To repeat:

- Ethernet (up to Gigabit speeds – maybe 10G)

- USB 3

- HDMI

- 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.

- 8+G Memory, 100+G SSD, i7 based?