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You are here: » Homepage » Audio & Video » Extenders » HDMI
Extend 4K@60Hz resolutions from 4 sources to 4 included receivers
The Lindy 70m Cat.6 4x4 HDMI® 4K60 Matrix Extender is a high-perfomance, professional solution for distribution of 4K HDMI® signals to multiple displays using standard Cat.6 network cables from 4 separate HDMI® sources.
Professional HDMI® Content Distribution
This 4x4 matrix allows for the distribution of HDMI® content to 4 separate locations, using the included receivers, at up to 70m in distance, perfect for splitting or switching content to various displays in sports bars, events or residential home cinemas. Each Cat.6 extension output also has a simultaneous HDMI® output for local monitoring for each zone, or for a larger install with closely located displays. Each port also support simple independent downscaling to 1920x1080, for consistently ensuring peak performance on a variety of displays. Professional EDID management ensures maximum compatibility with both the source devices and displays.
The following distance and resolution combinations are supported:
- 70m with Cat.6 cable: 1920x1080@60Hz 4:4:4 8bit, 3D@1920x1080
- 40m with Cat.6A cable: 3840x2160@60Hz 4:4:4 8bit / 4:2:2 12bit
Eye-Catching 4K and HDR Support
With support for resolutions up to 3840x2160@60Hz, this matrix provides exceptional clarity of high-quality video, including movies, sports, games, or live monitoring. HDR support ensures a much wider colour gamut is supported, alongside higher peak brightnesses and deeper blacks for an enhanced dynamic contrast. This provides an engaging visual experience for the viewer in a variety of different applications including home cinema installations, larger distribution in educational buildings or commercial advertising and displays.
Flexible Control
The included IR cables allow for simple control via an IR remote from any of the receiver locations, removing the need to be situated at the source side on the setup, while push buttons on the main unit provide easy control at the transmitter side. RS-232 and Ethernet connections also provide the ability for integration into larger control systems. An in-built Web-Gui also ensures very simple management using a connected PC.
Simultaneous PoC Distribution
The Cat.6 HDMI® 18G Matrix also supports PoC (Power over cable) allowing for power to be distributed alongside audio and video over the cat.6 cabling. This allows for only one power source being required at the transmitter side, ensuring a minimalist and time-saving setup at the receiver locations.
Please Note: The quoted resolutions are possible with a direct connection between transmitter and receiver using good quality Cat.6 solid core cable. Using a different cable type, introducing wall plates, couplers or patch panels will result in a reduction of maximum distances.
The terms HDMI, HDMI High-Definition Multimedia Interface, HDMI Trade dress and the HDMI Logos are trademarks or registered trademarks of HDMI Licensing Administrator, Inc.
Specifications
Connectors
Physical Properties
Miscellaneous
Package Contents
Purchasing Information

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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

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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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