Port blocker set Lindy RJ45 Port Locks Black — 10 pieces + 1 key, compatible with RJ-45 ports

Lindy RJ45 Port Locks Black is a set of ten semi-permanent RJ-45 port blockers with one matching insertion key. The moulded ABS caps insert and latch into standard RJ-45 network ports to block physical access, prevent cable insertion or tampering, and act as a clear visual indicator of inactive or secured ports. The set is intended for environments such as offices, server rooms, classrooms and other public areas where control of network endpoints is needed.

Advantages

The port blockers provide a simple, mechanical method to deter unauthorised or accidental connection to network ports without altering the hardware. Made from durable ABS plastic, each blocker latches into the RJ-45 connector and remains until removed with the supplied key. The included key and matching coloured blockers make insertion and removal straightforward for authorised personnel while remaining a visible deterrent for others.

Suitable for

• Offices and workstations to prevent unauthorised cable connections
• Server rooms and network cabinets to protect spare or inactive ports
• Schools and classrooms to restrict access to network outlets
• Public sector and shared spaces where visual port control is needed

When it may not be suitable

These port blockers act as a basic physical and visual deterrent but are not a high-security solution. A determined person with tools could still gain access to a port. The blockers are semi-permanent and require the matching insertion key for removal; they are not intended for situations that demand tamper-proof, lockable hardware with advanced security features.

Key specifications

• Compatibility: standard RJ-45 network ports
• Contents: 10 port blockers and 1 insertion key
• Material: Acrylonitrile butadiene styrene (ABS)
• Colour: black
• Mounting: plugs into RJ-45 jack and latches like a network connector

How to use

Attach a blocker to the insertion key and push it into the RJ-45 port until it latches in place. Hold the blocker while you withdraw the key; the blocker will remain secured in the port. To remove, insert the key into the blocker until it clicks and then pull both key and blocker out together. Use the matching colour key with corresponding coloured blockers to ensure compatibility.

What to consider before purchase

• These blockers are compatible only with standard RJ-45 ports and with blockers of the same generation and matching key colour
• They provide basic physical deterrence but are not a substitute for higher-security port locks or network access controls
• Intended for semi-permanent blocking—consider operational needs for authorised removal

Recommendations

Install blockers on unused or spare RJ-45 ports in offices, classrooms and server rooms to reduce accidental or unauthorised connections. Keep the insertion key in a secure location and label blocked ports where necessary to avoid confusion during maintenance.