And where do I put Vref, RTS, CTS, and plug detect? That's 7 pins ;)

</jk>

Less of a joke though: those aren't polarized, how do you not accidentally 180° them? Are they magnetically polarized or what?

[ed.: I didn't initially see it, they're mechanically polarized, one "short end" is flat, the other rounded.]

If you have money to burn, get some LEMO push-pull connectors. They'll run you about $80 for a pair of each gender, but when you use them, you understand why trendy audio gear and instrumentation/optical OEMs use them. Occasionally when I make a project I treat myself and use them. Cheaper options are Mini XLR and Hirose HR10. Molex make a lot of wire-wire, but they're typically not rated for more than 25-50 cycles.

Those magnet couplings are nice. EDAC make a non-Aliexpress version, about $25 a pair.

One side could be flush with an enclosure, but it's not clear how you attach the other side to a cable. There doesn't appear to be any housing to cover soldered wires, for instance.

Do you solder them to a PCB directly?