I suspect it'd need to have seriously low keyboard travel to fit all of those ports on the side.
In his post he doesn't indicate that he has a keyboard switch technology in mind, so add whatever keyboard tech you imagine to the thickness you see.
If you reduce the thickness of the keycap by 1/2, you'd get ca. 2mm for key-travel -- plenty for a bubble-dome clicky switch. Or one could try these very-low profile mechanical keys, but suffer an added ~5-8mm to the thickness.
Also the 230mm wide keyboard is /just/ in that netbook zone where touch typing starts to become feasible. I'd prefer 250mm but that would make it too big for some applications.
If I had my druthers, the keyboard itself would be part of a screw-on plate. A handful of keyboard types would be offered, each with identical connector, but the controller would allow for alternate layouts. To accomodate the differing keyswitch heights, just make the monitor hinge swappable with one designed for the higher keyboard, or make one that is adjustable vertically. A clip or screw-on shroud around the display cut to correct depth would then form the seal between display edge and device body.
[EDIT]We could get even wilder with that! The screw/latch-on keyboard idea would allow for extra-wide keyboards that extend up to a couple of cm over the sides of the device. The extrawide wouldn't obstruct connectors - probably - and the matching snap/screw-on shroud for the lid could have extended width and thus cover the keyboard with lid closed!
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That thing would either need a lot more thickness or magic to fit anything close to that number of ports...It would be a cool concept, but the MicroPC is probably about as close as he's going to get for now.
It really depends on what ports look on the inside. I can imagine the VGA port, for e.g., to have essentially no depth within the case behind the actual connector; just enough to affix a metal mounting plate. He claims to have 3D sketches where parts fit, but I didn't see a link to them.
There are other interesting ideas there though - very interesting ones.
* The keyboard layout is pretty darn good for how few keys are available
* 2x External PCI x4 lanes
* Low level SATA interface for diagnosing SATA drives
* Acts as a keyboard, usb storage, and monitor for the device you're administering
And these aren't just 'neat ideas'. These are serious value propositions for techs and administrators - and they can justify a serious price tag for business and institutional customers.