A fiber optic connector comprising a ferrule and a connector housing, wherein the ferrule comprises an optical fiber bore and the connector housing comprises: a ferrule retaining portion structurally configured to engage and retain the ferrule at a front portion of the connector housing; a longitudinal axis extending from a leading edge plane of the front portion of the connector housing, through the ferrule retaining portion, to a rear portion of the connector housing; a nominal housing portion being an outer surface of the connector housing; a rotationally discrete and recessed keying portion defined on the outer surface of the connector housing; and a rotationally discrete locking portion defined on the outer surface of the connector housing, wherein the nominal housing portion is interrupted by the rotationally discrete keying portion and the rotationally discrete locking portion, the connector housing comprises an unobstructed line of sight from the rotationally discrete keying portion to the leading edge plane of the connector housing along an advancing direction of the fiber optic connector, the rotationally discrete keying portion comprises at least one rotationally discrete contact surface that is structurally configured to inhibit rotation of the connector housing about the longitudinal axis when engaged with a complementary keying portion of an optical connector port, the rotationally discrete locking portion comprises a rearwardly facing port engagement face and a locking portion recess that is positioned rearward of the port engagement face, the locking portion recess is obstructed from the leading edge plane of the connector housing along the advancing direction of the fiber optic connector by the port engagement face, and the port engagement face of the locking portion is structurally configured to inhibit axial movement of the connector housing along a retracting direction of the fiber optic connector when engaged with a complementary securing member of an optical connector port. a ferrule retaining portion structurally configured to engage and retain the ferrule at a front portion of the connector housing; a longitudinal axis extending from a leading edge plane of the front portion of the connector housing, through the ferrule retaining portion, to a rear portion of the connector housing; a nominal housing portion being an outer surface of the connector housing; a rotationally discrete and recessed keying portion defined on the outer surface of the connector housing; and a rotationally discrete locking portion defined on the outer surface of the connector housing, wherein the nominal housing portion is interrupted by the rotationally discrete keying portion and the rotationally discrete locking portion, the connector housing comprises an unobstructed line of sight from the rotationally discrete keying portion to the leading edge plane of the connector housing along an advancing direction of the fiber optic connector, the rotationally discrete keying portion comprises at least one rotationally discrete contact surface that is structurally configured to inhibit rotation of the connector housing about the longitudinal axis when engaged with a complementary keying portion of an optical connector port, the rotationally discrete locking portion comprises a rearwardly facing port engagement face and a locking portion recess that is positioned rearward of the port engagement face, the locking portion recess is obstructed from the leading edge plane of the connector housing along the advancing direction of the fiber optic connector by the port engagement face, and the port engagement face of the locking portion is structurally configured to inhibit axial movement of the connector housing along a retracting direction of the fiber optic connector when engaged with a complementary securing member of an optical connector port. the nominal housing portion is interrupted by the rotationally discrete keying portion and the rotationally discrete locking portion, the connector housing comprises an unobstructed line of sight from the rotationally discrete keying portion to the leading edge plane of the connector housing along an advancing direction of the fiber optic connector, the rotationally discrete keying portion comprises at least one rotationally discrete contact surface that is structurally configured to inhibit rotation of the connector housing about the longitudinal axis when engaged with a complementary keying portion of an optical connector port, the rotationally discrete locking portion comprises a rearwardly facing port engagement face and a locking portion recess that is positioned rearward of the port engagement face, the locking portion recess is obstructed from the leading edge plane of the connector housing along the advancing direction of the fiber optic connector by the port engagement face, and the port engagement face of the locking portion is structurally configured to inhibit axial movement of the connector housing along a retracting direction of the fiber optic connector when engaged with a complementary securing member of an optical connector port.