The 9-position single-row layout means the mating half must also be a 9-position single-row receptacle or header of the same pitch.
Through-hole right-angle mounting with solder termination. A keying slot is present to prevent mis-mating with non-keyed receptacles. The brass contacts have a tin post finish (100.0 µinch) for good solderability, and a gold mating finish (15.0 µinch) for low contact resistance over multiple cycles.
