A security apparatus (100,1100,1200,1300,1400,1500,1600,1700,1800,1900,2000) for a portable electronic device (104,1128), the security apparatus (100,1100,1200,1300,1400,1500,1600,1700,1800,1900,2000) comprising: - a force-transmission member having a length, a first end, and a second end; - a lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) coupled to the first end of the force-transmission member, the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) configured to selectively engage the portable electronic device (104,1128) and movable by the force-transmission member between a locked position, in which the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) is secured to the portable electronic device (104,1128), and an unlocked position, in which the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) is unsecured from the portable electronic device (104,1128); and - an actuator assembly (116,1116,1216,1316,1416,1516,1716,1916,2016) spaced a distance from the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) along the length of the force-transmission member, the actuator assembly (116,1116,1216,1316,1416,1516,1716,1916,2016) including: a body (168,1320,1920,2020), a movable member positioned within the body (168,1320,1920,2020) and coupled to the second end of the force-transmission member, characterised in that the movable member includes a first ramped surface, the actuator assembly (116,1116,1216,1316,1416,1516,1716,1916,2016) further includes a manual actuator (176,1324,1924,2024) supported by the body (168,1320,1920,2020), the manual actuator (176,1324,1924,2024) including a second ramped surface that engages the first ramped surface of the movable member, the manual actuator (176,1324,1924,2024) being movable between a first position, in which the movable member is movable toward the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012), and a second position, in which the movable member is pushed away from the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) by the second ramped surface, and a lock mechanism (180,1328,1928,2028) supported by the body (168,1320,1920,2020) and coupled to the movable member to selectively inhibit movement of the movable member. - a force-transmission member having a length, a first end, and a second end; - a lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) coupled to the first end of the force-transmission member, the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) configured to selectively engage the portable electronic device (104,1128) and movable by the force-transmission member between a locked position, in which the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) is secured to the portable electronic device (104,1128), and an unlocked position, in which the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) is unsecured from the portable electronic device (104,1128); and - an actuator assembly (116,1116,1216,1316,1416,1516,1716,1916,2016) spaced a distance from the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) along the length of the force-transmission member, the actuator assembly (116,1116,1216,1316,1416,1516,1716,1916,2016) including: a body (168,1320,1920,2020), a movable member positioned within the body (168,1320,1920,2020) and coupled to the second end of the force-transmission member, characterised in that the movable member includes a first ramped surface, the actuator assembly (116,1116,1216,1316,1416,1516,1716,1916,2016) further includes a manual actuator (176,1324,1924,2024) supported by the body (168,1320,1920,2020), the manual actuator (176,1324,1924,2024) including a second ramped surface that engages the first ramped surface of the movable member, the manual actuator (176,1324,1924,2024) being movable between a first position, in which the movable member is movable toward the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012), and a second position, in which the movable member is pushed away from the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) by the second ramped surface, and a lock mechanism (180,1328,1928,2028) supported by the body (168,1320,1920,2020) and coupled to the movable member to selectively inhibit movement of the movable member. a body (168,1320,1920,2020), a movable member positioned within the body (168,1320,1920,2020) and coupled to the second end of the force-transmission member, characterised in that the movable member includes a first ramped surface, the actuator assembly (116,1116,1216,1316,1416,1516,1716,1916,2016) further includes a manual actuator (176,1324,1924,2024) supported by the body (168,1320,1920,2020), the manual actuator (176,1324,1924,2024) including a second ramped surface that engages the first ramped surface of the movable member, the manual actuator (176,1324,1924,2024) being movable between a first position, in which the movable member is movable toward the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012), and a second position, in which the movable member is pushed away from the lock head (112,1112,1212,1312,1412,1512,1612,1712,1912,2012) by the second ramped surface, and