The present invention is to present an electrical connector of a connector assembly having a detachable flexible C-shaped clip and a visor-like ferruled docking cantilever with a lower semicircular cutout and an arched groove configured in front end thereof, wherein said flexible C-shaped clip, which is to be lodged in the arched groove, has a pair of jutted noses for being latched and gripped by a corresponding pair of dents at the docking cantilever and a pair of bent latching toes for running through a pair of corresponding bores on the PCB in securely stable manner.