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Extend USB 3.0 connections up to 40m
The Lindy USB Active Extension Cable Pro is a high performance active cable that allows access to USB 3.0 SuperSpeed peripherals over long distances. With support for data transfer speeds of up to 5Gbps this extension cable is perfect for transferring large data volumes quickly and reliably.
This 15m extension cable can be used standalone or as part of the Lindy USB 3.0 Active Extension System Pro. This system is a modular solution that can combine multiple USB Active Extension Pro cables and a USB 3.0 Active Extension Pro hub to distribute USB signals to up to 4 devices at up to about 40m (depending on the cable configurations used).
Please note that only the USB 3.0 Active Extension Pro 8m (Nr. 43158) or 15m (Nr. 43229) can be connected directly to your computer. If you are creating an extension using multiple units from the Extension Pro System then the first unit must always be the USB 3.0 Active Extension Pro 8m (Nr. 43158) or 15m (Nr. 43229). Once the first cable has been connected, you can then cascade further cables to achieve a maximum distance of 40m. The final part of the extension can be any of the three parts of the Extension Pro System. If you need to extend multiple devices or if you connect a USB device with high power requirement, then you should use the 10m Hub Pro unit (Nr. 43159) with it_s power supply as the final part of the extension.
This cable features industry-proven active technology and locking connectors to ensure full signal integrity in the most demanding environments.
Please note: This product contains 2 USB 3.0 hubs, which needs to be considered if the product is deployed in a larger installation in connection with other devices.
Information about USB 3.0, 3.1 & 3.2
USB 3.0, USB 3.1 and USB 3.2 PCs, cables and devices are all compatible with each other, when using either a USB Type A or USB Type C host interface.
USB 3.0, USB 3.1 Gen 1 and USB 3.2 Gen 1 all support data transfer rates up to 5 Gbps.
USB 3.1 Gen 2 and USB 3.2 Gen 2 both support data transfer rates up to 10 Gbps.
Connectors
Cable Construction
Specifications
Miscellaneous
Packaging Content
Purchasing Information
This product is also available in other lengths

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Protect Critical SFP Ports from Tampering, Damage or Unauthorised Access
The Lindy SFP Port Blocker provides a fast, effective way to physically secure unused SFP (Small Form-factor Pluggable) network ports. These compact blockers are ideal for safeguarding fibre infrastructure in sensitive IT environments, AV-over-IP setups, and networked installations where access control is essential.
By preventing unauthorised connections, accidental cable insertions or foreign object intrusion, Lindy SFP Port Blockers reduce the risk of port damage and potential downtime. A robust insertion mechanism keeps each blocker firmly in place, with colour-coded keys ensuring only authorised removal. Additional keys and blocker packs are also available.
SECTION DIVIDER LINE
SECTION 4 - AT A GLANCE
Physical Network Access Control
Blocks unauthorised SFP port use and deters accidental cable insertion
Fibre-Ready Protection
Ideal for delicate SFP connections in enterprise and AV-over-IP systems
Quick Installation
Tool-free deployment – install or remove in seconds
Visual Cue
Indicates unused ports or identifies disconnected endpoints
Low Cost, High Scalability
Ideal for large rollouts with minimal overhead
Latching Design
Mimics the clip action of real connectors – for a secure hold
SECTION DIVIDER LINE
SECTION 5 – HOW IT WORKS

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SECTION 8 - TYPICAL SECTORS
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SECTION 9 - APPLICATIONS
Data Centres & Enterprise Network
Protect switchgear, routers and critical optical interfaces from disruption.
Education & Public Sector
Prevent tampering with fibre links in classrooms, libraries and shared facilities.
Retail & Hospitality AV Installations
Secure fibre-based AV equipment and signage systems in publicly accessible locations.
Facilities / Infrastructure
Visually mark inactive ports for future provisioning
Libraries / Shared Workspaces
Block unauthorised connections in public computing environments.
Healthcare & Labs
Protect equipment in clinical environments from unauthorised connections.
SECTION DIVIDER LINE
SECTION 10 - SUMMARY / CONCLUSION
Lindy SFP Port Blockers deliver precise physical control over fibre ports, helping IT and AV professionals reduce risk and maintain infrastructure integrity. Easy to deploy, visually obvious and highly scalable, they’re the smart choice for any network where protection starts at the port.
SFP Port Blocker Kit
10 x SFP Port Locks, 1x Key
SFP Port Blocker
1x Key Only
SFP Port Blocker
20x Locks Only
SECTION DIVIDER LINE
SECTION 1 - HERO IMAGE

SECTION 2 - HERO HEADLINE & SUBLINE
SECTION 3 - INTRO TEXT
Protect Critical SFP Ports from Tampering, Damage or Unauthorised Access
The Lindy SFP Port Blocker provides a fast, effective way to physically secure unused SFP (Small Form-factor Pluggable) network ports. These compact blockers are ideal for safeguarding fibre infrastructure in sensitive IT environments, AV-over-IP setups, and networked installations where access control is essential.
By preventing unauthorised connections, accidental cable insertions or foreign object intrusion, Lindy SFP Port Blockers reduce the risk of port damage and potential downtime. A robust insertion mechanism keeps each blocker firmly in place, with colour-coded keys ensuring only authorised removal. Additional keys and blocker packs are also available.
SECTION DIVIDER LINE
SECTION 4 - AT A GLANCE
Physical Network Access Control
Blocks unauthorised SFP port use and deters accidental cable insertion
Fibre-Ready Protection
Ideal for delicate SFP connections in enterprise and AV-over-IP systems
Quick Installation
Tool-free deployment – install or remove in seconds
Visual Cue
Indicates unused ports or identifies disconnected endpoints
Low Cost, High Scalability
Ideal for large rollouts with minimal overhead
Latching Design
Mimics the clip action of real connectors – for a secure hold
SECTION DIVIDER LINE
SECTION 5 – HOW IT WORKS

SECTION DIVIDER LINE
SECTION 8 - TYPICAL SECTORS
SECTION DIVIDER LINE
SECTION 9 - APPLICATIONS
Data Centres & Enterprise Network
Protect switchgear, routers and critical optical interfaces from disruption.
Education & Public Sector
Prevent tampering with fibre links in classrooms, libraries and shared facilities.
Retail & Hospitality AV Installations
Secure fibre-based AV equipment and signage systems in publicly accessible locations.
Facilities / Infrastructure
Visually mark inactive ports for future provisioning
Libraries / Shared Workspaces
Block unauthorised connections in public computing environments.
Healthcare & Labs
Protect equipment in clinical environments from unauthorised connections.
SECTION DIVIDER LINE
SECTION 10 - SUMMARY / CONCLUSION
Lindy SFP Port Blockers deliver precise physical control over fibre ports, helping IT and AV professionals reduce risk and maintain infrastructure integrity. Easy to deploy, visually obvious and highly scalable, they’re the smart choice for any network where protection starts at the port.
SFP Port Blocker Kit
10 x SFP Port Locks, 1x Key
SFP Port Blocker
1x Key Only
SFP Port Blocker
20x Locks Only
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