A small metal case with the top removed exposing a black and golden looking PCB with an M.2 port. Inserted in that M.2 port is a M.2 card with a bunch of SATA ports on it that are facing updwards away from the card.
https://files.mastodon.social/media_attachments/files/113/988/178/355/524/555/original/1bae91e7afc880de.jpg