alt Hacker NewsYou'll be wanting these: https://www.digikey.com/en/products/detail/edac-inc/686C0731...
And yes, they're magnetically polarized according to the datasheet. To answer the sibling comment, they're through-hole soldered but frustratingly are 2.7mm not 2.54 so you'd be squeezing a little into an existing header (ignoring clearance on the side anyway). I'm not sure why the 7-pin is obsolete, they make up to 5-way active.
Or Adafruit? https://www.adafruit.com/product/5468
Yes, yes :). I was really joking with the 7 pins.
It would be amazing though to make it a hermaphroditic 4 or 6pin connector. With a pinout like this:
So it always plugs at a 180° rotation, connecting RX to TX. And any cable also rotates 180°. Since you always have an odd total of (connections + cables), you always get the right connection...