Abstract: A mechanical-magnetic connector structure for releasably connecting a first element with a second element is herein described. The connector structure includes a dongle attached to the first element, a receiver assembly attached to the second element and having a bore, and a rotating knob assembly attached to the receiver assembly and rotatable between an open and closed position to unlock or lock the dongle within the bore. With the rotating knob assembly rotated to the closed position, the dongle no longer is completely concentric within the bore, such that a user is prevented from applying any offset, angled, or indirect pull force on the dongle in an effort to remove it. The dongle can only be removed if completely concentric within the bore and the rotating knob assembly has been rotated to the open position.