Jumping on this thread. I've had the hinge kit for a while and have never been able to get it to power my second rack. I emailed about this but never heard back. Would love to get to the bottom of it. Should it, in theory, power the second rack viz viz the ribbon cable attached between the two cases? Sending static photos for ref: ribbon cable between two racks, trying to power the second rack viz viz the ribbon cable, then w/ regular power for both.
New development: I swapped out the ribbon cable from the smaller case as it's longer and have used that to connect the two larger racks. The ribbon cable doesn't twist and now powers both racks. Problem sorted! Thanks admin. Can confirm it's not a good idea to twist your cables :o