AK3 motherboard strange connector unused

[coolmo]

Hi all,
I had opened the case and found this connector (USB something like) with no route to external chassis.
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7be2522b-3c28-49a9-93fa-e9c5ba140660.jpg (99.53 KiB) Viewed 2198 times

What is it? what for? any suggestions on possible uses for tweaking?

Thanks in advance,
KMo

[Gabe]

It's for when the board is used in a case that has an SSD/HDD carriage, like the AK1. It can't be used for anything else, as though it resembles USB-C, it's configured only for that case carriage.