A computing system comprising: a control unit (116, 502, 602); a receptacle (118, 506, 604) electrically coupled to the control unit (116, 502, 602); a lock port (102, 508, 606) to receive a cable-lock unit to lock the computing system at a location; a lock engagement member (112, 510, 608); and a plug (10, 114, 512, 610) coupled to the lock engagement member (112, 510, 608), wherein the lock engagement member (112, 510, 608) and the plug (10, 114, 512, 610) are to translate and form an electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604) in response to receiving the cable-lock unit in the lock port (102, 508, 606), and wherein the lock engagement member (112, 510, 608) and the plug (10, 114, 512, 610) are to translate and break the electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604) in response to removing the cable-lock unit from the lock port (102, 508, 606), and wherein the control unit (116, 502, 602) is to determine absence of the cable-lock unit in the lock port (102, 508, 606) in response to break in the electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604); and wherein the control unit (116, 502, 602) is to: determine presence of the cable-lock unit in the lock port (102, 508, 606) in response to formation of the electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604); operate the computing system in a secure mode in response determining the presence of the cable-lock unit in the lock port (102, 508, 606); and operate the computing system in a second mode in response to determining the absence of the cable-lock unit in the lock port (102, 508, 606). a control unit (116, 502, 602); a receptacle (118, 506, 604) electrically coupled to the control unit (116, 502, 602); a lock port (102, 508, 606) to receive a cable-lock unit to lock the computing system at a location; a lock engagement member (112, 510, 608); and a plug (10, 114, 512, 610) coupled to the lock engagement member (112, 510, 608), wherein the lock engagement member (112, 510, 608) and the plug (10, 114, 512, 610) are to translate and form an electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604) in response to receiving the cable-lock unit in the lock port (102, 508, 606), and wherein the lock engagement member (112, 510, 608) and the plug (10, 114, 512, 610) are to translate and break the electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604) in response to removing the cable-lock unit from the lock port (102, 508, 606), and wherein the control unit (116, 502, 602) is to determine absence of the cable-lock unit in the lock port (102, 508, 606) in response to break in the electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604); and the lock engagement member (112, 510, 608) and the plug (10, 114, 512, 610) are to translate and form an electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604) in response to receiving the cable-lock unit in the lock port (102, 508, 606), and wherein the lock engagement member (112, 510, 608) and the plug (10, 114, 512, 610) are to translate and break the electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604) in response to removing the cable-lock unit from the lock port (102, 508, 606), and wherein the control unit (116, 502, 602) is to determine absence of the cable-lock unit in the lock port (102, 508, 606) in response to break in the electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604); and wherein the control unit (116, 502, 602) is to: determine presence of the cable-lock unit in the lock port (102, 508, 606) in response to formation of the electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604); operate the computing system in a secure mode in response determining the presence of the cable-lock unit in the lock port (102, 508, 606); and operate the computing system in a second mode in response to determining the absence of the cable-lock unit in the lock port (102, 508, 606). determine presence of the cable-lock unit in the lock port (102, 508, 606) in response to formation of the electrical connection between the plug (10, 114, 512, 610) and the receptacle (118, 506, 604); operate the computing system in a secure mode in response determining the presence of the cable-lock unit in the lock port (102, 508, 606); and operate the computing system in a second mode in response to determining the absence of the cable-lock unit in the lock port (102, 508, 606).