What is this PCB (IC?) connector called?
It is very similar to the Hirose DF40 surface-mount "riser" connector. But I don't see any 16-pin versions. I wonder if that isn't a 20-pin version with the two end pins missing from each end?

Ref: https://www.hirose.com/product/en/download_file/key_name/DF40/category/Catalog/doc_file_id/31649/