Not Available Direct - For Corporate Accounts Only. The Targus DEFCON® Serialised T-Lock Combo Cable Lock is a serialised lock with a pre-set combination. This Targus laptop security product finally provides a computer security solution for complete asset protection. The Targus DEFCON® Serialised T-Lock Combo Cable Lock is 6.5' of cut-resistant, galvanized steel cable that loops around any secure object and easily attaches to your laptop computer's lock slot. Our DEFCON® Serialised T-Lock Combo Cable Lock features a pre-set combination lock in which your IT Manager has access to all combinations via a secure password protected web site. The DEFCON® Serialised T-Lock Combo Cable Lock is the first laptop computer security product to offer the benefits and convenience of a keyless security solution.