Topic: my twist lock indicator
I saw the sticker about the twist lock DC power connector. However, as other people do not know about it or cannot remember it, I put a rotation reminder over the RME DC power cable.
Long time a go, I did a similar thing for unbalanced audio cables with twist lock WBT RCA connector and speaker cables with WBT twist lock banana connector - It is more tricky as only a part of the connector rotates. -. I do not need such an indicator on the cables as I baby hi-fi gears, but another member of the family or a TV or cable TV service technician visiting home needed it.