This PCB has a circular DIN 8 pin socket footprint that works with one of the connectors available on AliExpress with part number

ds-8-101

The connector has 8 pins for the connector pins and two extra front pins spaced 10mm apart.

There is a similar part with a B: ds-8-101B but that one has the two extra front pins spaced closer together.

Searching on AliExpress is not easy since the part number doesn't find results very well.

I was able to find it by searching for DIN8 and then scrolling through various listings until I found one that clearly showed mechanical sketches with dimensions, the PCB footprint, and the part number ds-8-101 clearly indicated.

This PCB has 8 0.1 inch pitch header pins for easy breadboard connection.

DIN connectors with less than 8 pins can still be plugged in, for example I also used it as a breakout board for a DIN 5 pin.