A rusty AT tower with a missing PSU. The hole for the PSU is relatively small, approximately the same as a modern PSU. The AT PSU being held next to it is a monster, more like an original IBM XT, far too large to fit in the tower and have any of the holes line up
https://digipres.club/system/media_attachments/files/112/045/978/860/369/885/original/fbc2b79eeee50a91.jpeg