The Molex 2137192091 is a 9-circuit single-row plug housing from the Micro-Lock PLUS 213719 series. This makes the connector suited for applications where the harness sees movement or shock, such as automotive interior, industrial control panels, and consumer appliance wiring.
This plug mates with the Micro-Lock PLUS 2.00 mm pitch single-row header (male pin receptacle side). No secondary lock is required; the ramp holds the pair mated under normal cable strain. The 9 cavities are arranged in a single row. Each cavity accepts one male pin contact; there are no dummy or keying positions in this variant.
If you need a pin-compatible alternative within the Micro-Lock PLUS family, the position count is the only variable — a 10-circuit or 8-circuit sibling changes the BOM line, not the footprint or mating interface.