A connector of a cable (e.g., a 30-pin connector) can be used to facilitate various security-related and other functionalities. For example, a connector can include security locking mechanisms for engaging or locking the connector to a portable electronic device. A connector can additionally support the transmission of security signals, data signals, power, and/or the like. An unlocking tool can be used to disengage a connector locked to the portable electronic device. More specifically, the unlocking tool can be applied to a connector and cause the locking mechanisms of the connector to release such that the connector can be freely disconnected from a connected portable electronic device.