An anchor configured to be installed into a slot in a portable electronic device and to be subsequently engaged by a locking head of a lock in order to secure the portable electronic device to an immovable object, the anchor comprising: a body including an insertable portion configured to be inserted into the slot of the portable electronic device, and a boss extending from the insertable portion and positioned outside of the slot, the boss having a cap, a ring structure, and an annular recess positioned between the cap and the ring structure, the boss configured to attach to a lock head; and a first tapered projecting member coupled to the insertable portion of the body, and a second tapered projecting member coupled to an opposite side of the insertable portion from the first tapered projecting member, the first and second tapered projecting members being movable relative to the insertable portion between an extended position, in which the tapered projecting members extend in opposite directions from within the insertable portion to engage respective surfaces of the portable electronic device that defines the slot, and a retracted position, in which the tapered projecting members retract within the insertable portion to disengage the respective surfaces of the portable electronic device that defines the slot, wherein the anchor further comprises a fastener coupled with the body and selectively engageable with the first and second tapered projecting members to move the tapered projecting members to the extended position, wherein the fastener is a threaded screw, and wherein rotation of the threaded screw causes translation of the threaded screw along a longitudinal axis of the body that selectively moves the threaded screw into or out of engagement with the first and second tapered projecting members. a body including an insertable portion configured to be inserted into the slot of the portable electronic device, and a boss extending from the insertable portion and positioned outside of the slot, the boss having a cap, a ring structure, and an annular recess positioned between the cap and the ring structure, the boss configured to attach to a lock head; and a first tapered projecting member coupled to the insertable portion of the body, and a second tapered projecting member coupled to an opposite side of the insertable portion from the first tapered projecting member, the first and second tapered projecting members being movable relative to the insertable portion between an extended position, in which the tapered projecting members extend in opposite directions from within the insertable portion to engage respective surfaces of the portable electronic device that defines the slot, and a retracted position, in which the tapered projecting members retract within the insertable portion to disengage the respective surfaces of the portable electronic device that defines the slot, wherein the anchor further comprises a fastener coupled with the body and selectively engageable with the first and second tapered projecting members to move the tapered projecting members to the extended position, wherein the fastener is a threaded screw, and wherein rotation of the threaded screw causes translation of the threaded screw along a longitudinal axis of the body that selectively moves the threaded screw into or out of engagement with the first and second tapered projecting members.