In December 2015 I received details from Matt of how he added a SATA SSD. He wrote:
"I can confirm that I can boot from the SATA drive after removing the 1GB IDE DOM.
I added a SATA SSD in a very simple way: All you need to do is remove one of the VESA attachment screws after which the SSD can be secured with two screws through the vent holes."
The top side of the metal screening cover. You can see that the threaded insert has been removed from the hole in the foreground.
The SSD mounted on the inside of the cover.
I used them as router boxes (one with pfsense and one with ipfire). I installed a mini-pcie network card in it. Very solid machines and they run 24/7 for a few months without trouble.
Any comments? email me. Added December 2015