Here is a initial list of documentation & specs about building a Zynthian Box:
- http://blog.zynthian.org/index.php/2015/11/22/building-a-zynthian-box/
- http://wiki.zynthian.org/index.php/Build_a_Zynthian_Prototype-3
- https://github.com/zynthian/zynthian-hw
Please, feel free to add more as comments.