Secure mounted displays with a low-profile accessory designed to stay out of sight and out of the way. The Chief PACLK1 adds a cable lock, padlock, key, and Velcro retention to FIT fixed wall mounts, helping protect the installation without enclosing the entire display or adding visual clutter. Built for Chief FIT fixed mounts, it integrates with RMF2, RLF2, and RXF2 systems to support a cleaner security strategy in lobbies, conference rooms, classrooms, and other accessible environments. The hidden placement preserves the finished appearance of the display wall while adding a practical deterrent against casual theft or unauthorized removal. For teams standardizing on Chief mounting hardware, PACLK1 is a focused accessory that extends protection where it matters most: at the mount interface. It is a simple addition, but one that can reduce risk, support facility standards, and help maintain uptime for displays that need to stay exactly where they were installed.