Hi,
I had the same problem and asked AJA about this. They said that 6 foot cables (the ones that come with the KBox) are the maximum length that can be used, nothing longer. Alas, but that’s what they said.
Since I have an isolation rack with no rear rails, my workaround was to mount the KBox to the back of a 1-space rack shelf, and then mount my patchbay in front of the box and the shelf’s rack ears, so that the rack screws hold both in place.
Hope this is (somewhat) helpful.
Cheers,
David Langley
Editor/Designer
Pictures & Players