At 0.250" (6.35mm) row spacing, this housing accepts either male or female crimp contacts — the same cavity works for both, which simplifies inventory if you stock one terminal type for the whole harness.
Plan the terminal line item at the same time as the housing to avoid a partial-kit delay on the assembly bench.
The 1-1644055-3 is a 6-position, 2-row plug in the same Universal MATE-N-LOK family, also free-hanging with latch lock and crimp termination. The 1-480706-1 adds a third row and three more positions — 9 vs 6 — at the same 0.250" row spacing. If your circuit count is 6 or fewer, the 2-row housing saves board space and cavity waste; at 7 to 9 circuits, the 3-row 1-480706-1 is the correct fit.