Network Security Blocker: NataLink RJ-45 Port Blocker quickly and effectively blocks open network ports, preventing unauthorized connections, devices or foreign objects from being inserted. This ensures your network stays secure from unauthorized access and accidental or malicious damage | Secure & Easy Locking: The RJ-45 Port Blocker features a molded plastic cap that securely latches into the RJ-45 port using a unique insertion key, similar to how a network cable connects. The blocker stays firmly in place until removed with the key | Portable Convenience: Compact and portable, the port blocker can be easily carried in your bag or pocket, making it an essential tool for IT professionals on the go. It can be used with RJ45 plug locks and lock cylinders for added versatility | Basic Tampering Deterrent: Designed as a physical and visual deterrent, the port blocker provides basic protection against tampering. However, it won’t stop a determined attacker from gaining physical access to an RJ-45 port | Colorful Options: The package includes 24 RJ-45 port locks and 2 keys. Available in a variety of colors including red, black, blue, green, grey, orange, and clear to suit your preferences or organizational needs