It is very vague, many interfaces do not work at all although class compliant, others work but crack etc. In the Akai forum there is a thread for an overview: https://www.mpc-forums.com/viewtopic.php?f=48&t=211654
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However, where availability is unknown, this means that we are out of stock and awaiting information on possible supply. As soon as we have more details, we will update the delivery time.
Unfortunately, we currently have no information on when the item will be available and when we will be able to deliver it. As soon as something changes in this regard, we will post it here. Sorry.