Assurance. With locking power cables, you have an additional layer of protection from your equipment seizing to function to help you lower chances of downtime. Consider every piece of equipment in a data center, each item will require a connection to the unit and to the power distribution unit ( not including redundant power supplies). Each of these connection points has the potential to loosen over time from equipment vibration, maintenance to nearby racks, and other circumstances. Locking power cables provide assurance against these innumerable connection points from disconnecting accidentally.