Of course UFS's big brother0 quit in 2005/6, and the "inventor" works on footwear now.

Apparently a commercial spec sheet was never released1 for what the Universal Frame System would consist of, and parts labeled UFS often require modification to be compatible with other "UFS" parts:

Interested parties generally always refer back to Salomon's UFS patent filed in 2001, we'll call this Borel's Law:

And shucks, nobody really cares about any of this except for the distance between mounting bolts and those nub-pin-"cavity" thingies [which inconveniently, aren't explicitly defined in ...