Sorry for the inconvenience. Known Navigation header breakage, its being "rebuilt."
There may be other unforeseen breakage primarily in the handbook portion of the wiki.
The Table Of Contents section of each "PC-BSD® Users Handbook" page may be the best workaround.
Category:Minimum Hardware Requirements
This category has only the following subcategory.
Pages in category ‘Minimum Hardware Requirements’
The following 8 pages are in this category, out of 8 total.