The Molex 2137192090 is the 9-circuit plug housing in the Micro-Lock PLUS 213719 series — a 2.00 mm pitch wire-to-board interconnect system. This is the free-hanging, male-pin side of the pair; it accepts crimp terminals and mates with the board-mounted Micro-Lock PLUS receptacle. The 0.079" (2.00 mm) pitch keeps the board footprint tight enough for dense layouts but still leaves room for 20-24 AWG wire routing.
Termination and Mating — What Goes In and What It Plugs Into
This is a crimp-termination housing — it ships empty, without contacts. You select the matching Micro-Lock PLUS male crimp terminal (Molex p/n 56134-0xxx series, depending on wire gauge) and insert it into the cavity. The mating receptacle is the Micro-Lock PLUS board-mount header (Molex p/n 213720-xxxx), which carries the female contacts. The locking ramp on the plug engages the header's latch window — you'll feel it click home. No secondary lock or TPA required on this housing; the primary latch is the retention mechanism.