A connector assembly includes a socket connector which includes a socket housing, a plurality of first terminals spaced apart from each other in a first direction of the socket housing, and a first alignment unit which protrudes from the socket housing and is asymmetrically disposed with respect to a virtual line which passes through a center of the socket housing in a second direction perpendicular to the first direction, and a plug connector which is coupled to the socket connector and includes a plug housing, a plurality of second terminals spaced apart from each other in the first direction of the plug housing and respectively coupled to the plurality of first terminals, and a second alignment unit disposed on the plug housing and coupled to the first alignment unit.