Good to know. The more things are standardized, the more likely it is I'll consider supporting them.My upcoming unit as well as HDPlex's 300W DC-ATX will have standardized threaded mounting holes on the backplate. I will be making the standard available here for all case designers and will also be forwarding it to the fine people at G-Unique if they want to collaborate on helping us standardize DC-DC board. As a case designer, all you will need is four small holes to retain the screws.
I figure the most a build in this case could draw is probably in the 250W range, so 3-400W is what I'm thinking as a starting point. Higher capacities are mainly interesting for their potential to lower sound levels.Also @Necere, what wattages are you thinking of supporting with respect to Flex ATX power supplies? I am also collaborating with Larry on a load sharing device that would allow the linkage of multiple HDPlex AC-DC units. Additionally my solution will allow daisy chaining for either 460W and 760W capacities, while Larry is going to be offering a 500W version of his DC-DC shortly. Perhaps this could provide a nice alternative to the Flex?