Which connector is it?
Seems to be a Panasonic P5KS Series connector, likely the AXK5S24047YG, or a similar one from the series. A mating connector for this one would be an AXK6S24447YG or similar.
See the datasheet and the obligatory Digikey link.

Obligatory Digikey link

I found this by searching Digikey, going to the Connectors, Interconnects category, then Rectangular Connectors - Arrays etc, then punched in the known values into the search: 24 pins, 2 rows, 0.5mm pitch, Center Strip Contacts.
I have no affiliation with Digikey, I just find their parametric search good.