Port blocker key Lindy for SFP ports, green, 20×74.5×5.9 mm

The Lindy SFP Port Blocker Key is a compact accessory designed to secure unused SFP ports and prevent unauthorized or accidental insertion of connectors or foreign objects. The blocker provides a clear visual indication of inactive or disconnected ports and is suitable for use in offices, schools and other public-sector or shared network environments. Its molded plastic cap fits into SFP slots and is inserted and removed using the included insertion key.

Advantages

The semi-permanent design latches into the SFP port like a standard connector, offering a reliable physical and visual deterrent to casual tampering. The blocker is small and easily managed with the insertion key, allowing quick installation and removal without tools. Its low-profile molded plastic construction is compatible with standard SFP slots and helps manage unused ports in racks and switches.

Suitable for

• Securing unused SFP ports on network switches and rack-mounted equipment
• Preventing accidental insertion of cables or objects in public or multi-user environments
• Identifying inactive or disconnected SFP ports visually
• Use in schools, offices, data closets and other shared network locations

Key specifications

• Compatibility: standard SFP ports/slots
• Material: molded plastic cap with insertion key
• Dimensions: 20 mm (width) × 74.5 mm (depth) × 5.9 mm (height)
• Color: green
• Mounting: inserts and latches into SFP port; removable with insertion key

How to use

Attach the blocker to the insertion key, align it with the SFP slot and push the blocker into the port until it latches in place. Hold the blocker while withdrawing the key. To remove the blocker, insert the key into the blocker until it clicks, then pull the blocker out of the port using the key.

Usage recommendations

The port blocker provides a basic physical and visual deterrent to tampering but does not prevent a determined attacker with physical access from accessing an SFP port. Use the blocker as part of broader physical security measures, such as controlled access to network cabinets and regular monitoring of network equipment.