The Molex 533580450 is a 4-position, single-row header from the Mi II 53358 series, on a 0.079" (2.00mm) pitch. The single-row layout and 4 circuits suit it for simple I/O, sensor connections, or internal power taps where you need a few lines in a tight layout.
Pitch and Position Orientation
For the board layout engineer, that means the footprint uses a 2.00mm grid — compact enough for dense routing but still hand-solderable with care. The 4 positions are arranged in a single row; pin 1 is typically marked on the housing or by a chamfered edge on the header. Always confirm the orientation against the mating receptacle housing before committing the PCB layout.