@chjara @marczak
When this model of adapter first came out, it was actually a new development.
Older gender changer adapters were much more bulky by comparison, usually two connectors in a shell an inch or so long with wires in between each pin crossing over each other in between.
This newer (as of the late 1980s, IIRC) model instead did the trick by rotating one of the connectors 180° so that the pins are actually just solid, unsheathed wire straight through the adapter with two 90° bends in it. This kept pin 1 at the same end of both connectors (no wires crossing over each other) and zigzagged the solid pin inserts back and forth.
Yeah, seems obvious in hindsight, but it wasn't at the time 🤷