Connector with locking bracket (2) and locking tongue (1), - to release, lower the bracket (2) down (arrow), the connection is made with the bracket lowered
Connector with two locks, - squeeze to release (arrows), when connecting, make sure that the locks snap into place
Connector with one lock - press to release (arrow), when connecting, make sure that the lock snaps into place
Connector without locks, when connecting, make sure the fit is correct