how much PCIe bandwidth to each slot? the full x16 lanes? or is it gimped to x1? does it run at full PCIe 3.0? or again gimped to lesser like 2.0 or 1.1?

how about the CPU specs? available to upgrade to something with more cajones?

does this actually fit in a standard 19" server rack? or is it too wide like all the other guys selling "4U server" setups? what about rails?