UGREEN HD178 45505 4K Fiber Optic HDMI Cable 20M – High-Speed 4K@60Hz Long-Distance HDMI Cable

The UGREEN HD178 45505 4K Fiber Optic HDMI Cable 20M is designed for users who need reliable, high-resolution audio and video transmission over longer distances. With its 20-metre length, HDMI 2.0 compatibility and Active Optical Cable (AOC) technology, it is suitable for connecting computers, media players, gaming devices and other HDMI sources to distant televisions, monitors or projectors.

The cable supports resolutions up to 4K UHD at 60Hz, with bandwidth of up to 18Gbps. It also supports HDR and HDCP 2.2 when used with compatible equipment, making it a practical option for home theatres, conference rooms, classrooms, showrooms and professional AV installations.

Unlike a conventional short copper HDMI cable, this model uses an optical and copper hybrid transmission design intended for long-distance signal delivery. Its directional connectors must be installed correctly: the Source/Input end connects to the transmitting device, while the Display/Output end connects to the screen.

Common Problems with Long-Distance HDMI Connections

Connecting a display over a long distance can present several challenges:

• Signal instability with unsuitable long copper cables
• Difficulty connecting a computer to a distant projector
• Limited cable length in conference rooms and auditoriums
• Interference concerns in equipment-heavy environments
• Unreliable picture or audio when the HDMI chain is incompatible
• Installation challenges when cables need to run through walls or ceilings

The UGREEN HD178 provides a long-distance HDMI connection designed to address these requirements when used with compatible source and display equipment.

Smart Solution: 20-Metre Active Optical HDMI

The UGREEN HD178 combines optical transmission with active electronics to carry HDMI audio and video over a 20-metre cable.

Its design is intended to support high-bandwidth HDMI 2.0 signals while reducing susceptibility to electromagnetic and radio-frequency interference. The cable carries one source-to-display signal and does not require a separate external power adapter according to the listed specifications.

Key Features

1. 20-Metre Long-Distance Transmission

The 20-metre length makes this cable suitable for installations where the source device and display are positioned far apart.

It can be useful for:

• Connecting a computer to a projector
• Linking an AV receiver to a distant television
• Connecting media players to large displays
• Conference room presentations
• Classroom and auditorium installations
• Showrooms and other commercial display environments

2. 4K UHD Resolution at 60Hz

The cable supports video resolutions up to 3840 × 2160 at 60Hz when the source, display and any intermediate equipment support the required format.

This allows compatible systems to deliver detailed 4K images for presentations, movies and other supported content.

3. HDMI 2.0 Compatibility

The HD178 uses HDMI 2.0-class connectivity with a maximum stated bandwidth of 18Gbps.

This supports compatible high-resolution video and audio formats within the cable’s specified capabilities. It is not specified for HDMI 2.1 features such as 8K at 60Hz or 4K at 120Hz.

4. Active Optical Cable Technology

The cable uses Active Optical Cable (AOC) technology with optical and copper hybrid signal transmission.

This construction is designed for long-distance HDMI connections where maintaining a suitable signal over an extended cable run is important.

5. HDR Support

The HD178 supports HDR with compatible sources, displays and content.

HDR can provide a wider range of brightness and visual detail when the complete HDMI connection supports the selected HDR format. Actual results depend on the connected equipment and content.

6. HDCP 2.2 Support

The cable supports HDCP 2.2 content protection with compatible equipment.

This is useful for supported protected video content, provided the source, display and all intermediate devices in the HDMI chain also support the required HDCP version.

7. Directional Source and Display Connectors

The HD178 is a directional cable.

• Source/Input: Connect to the HDMI output of a computer, media player, console or AV receiver.
• Display/Output: Connect to the HDMI input of a television, monitor or projector.

Reversing the ends can prevent the signal from working correctly, so identify both labels before installation.

8. Reduced EMI/RFI Susceptibility

The optical transmission design is intended to reduce susceptibility to electromagnetic and radio-frequency interference.

This can be beneficial in installations with multiple electronic devices, AV equipment and other potential sources of interference.

9. Gold-Plated Contacts and Alloy Connector Shells

The listed connector construction includes gold-plated contacts and alloy shells.

These features are designed to support reliable connections and protect the connector termination points during normal use.

10. No Separate External Power Adapter Specified

The HD178 is listed as drawing operating power through the HDMI connection, with no separate external power adapter specified for this model.

For best results, test the cable with the actual source and display before completing a permanent installation.

Key Benefits

• 20-metre HDMI cable for long-distance installations
• Supports up to 4K UHD at 60Hz
• HDMI 2.0 compatibility
• Up to 18Gbps bandwidth
• Active Optical Cable technology
• Optical and copper hybrid transmission
• HDR support with compatible devices
• HDCP 2.2 support
• Reduced susceptibility to EMI/RFI
• Full-size HDMI male-to-male connectors
• Gold-plated contacts
• No separate external power adapter specified
• Suitable for home, office and commercial AV setups

Perfect For

The UGREEN HD178 20M HDMI cable is suitable for:

• Home theatre systems
• 4K televisions and monitors
• Desktop computers and laptops with HDMI output
• Media players
• AV receivers
• Projectors
• Conference rooms
• Classrooms and lecture halls
• Auditoriums
• Digital signage and showrooms
• Long-distance display installations

Compatibility depends on the HDMI ports, video formats and HDCP support of the connected devices.

Why Choose UGREEN HD178 45505?

A 20-metre display connection requires more planning than a typical short HDMI cable. The UGREEN HD178 is designed specifically for long-distance HDMI transmission, combining an optical signal path with HDMI 2.0-class bandwidth.

Its support for 4K@60Hz, HDR and HDCP 2.2 makes it a practical choice for compatible display setups that require a long cable run without moving the source device closer to the screen.

UGREEN HD178 vs Standard HDMI Cable

How to Use UGREEN HD178 45505

Step 1: Identify Both Cable Ends

Locate the labels on the connectors before connecting or routing the cable.

Step 2: Connect the Source End

Connect the Source/Input end to the HDMI output of your computer, media player, console or AV receiver.

Step 3: Connect the Display End

Connect the Display/Output end to the HDMI input of your television, monitor or projector.

Step 4: Test the Connection

Turn on both devices and select the correct HDMI input. Test picture and audio at your intended resolution and refresh rate.

Step 5: Confirm HDR or Protected Playback

If you need HDR or HDCP-protected content, confirm that the source, display and any intermediate devices support the required format.

Step 6: Complete the Installation

Only route the cable through a wall, ceiling or conduit after confirming stable operation with the actual equipment.

Recommended Use Cases

Home Theatre

Connect an AV receiver or media player to a television positioned across a large room.

Office Presentations

Run a long HDMI connection from a presentation computer to a conference room display or projector.

Classroom and Auditorium

Connect an instructor’s computer or AV equipment to a distant projection screen.

Showrooms

Send video from a media player or computer to a display positioned away from the equipment cabinet.

Professional AV Installations

Use the cable for compatible long-distance HDMI links in fixed installations where optical transmission is beneficial.

Installation & Maintenance

To help protect the cable and maintain a reliable connection:

• Test the cable before permanent installation.
• Follow the Source/Input and Display/Output direction labels.
• Route the cable with broad, gentle bends.
• Avoid crushing, kinking, stapling or tightly bending the cable.
• Do not pull the cable by its HDMI connectors.
• Protect connector ends from dust, moisture and construction debris.
• Provide strain relief so the cable does not hang from an HDMI port.
• Avoid unnecessary couplers or wall plates where possible.
• Confirm local building and fire requirements before in-wall installation.

Active optical cables contain optical components and electronics, so physical damage may be difficult or impossible to repair.

Important Usage Tips

• This is a directional HDMI cable, not a bidirectional cable.
• Connect Source/Input to the transmitting device and Display/Output to the screen.
• It supports up to 4K@60Hz, not HDMI 2.1-class 4K@120Hz or 8K@60Hz.
• Maximum performance depends on the complete HDMI signal chain.
• HDR and HDCP 2.2 require compatible equipment and content.
• Test the cable before concealing it inside a wall or ceiling.
• Do not cut, splice or re-terminate the factory-terminated optical cable.
• Avoid tight bends and excessive pulling force.
• This cable carries one HDMI connection; it does not split a source to multiple displays.

Product Specifications

Specifications are based on listings for the exact UGREEN HD178, product code 45505.

What’s in the Box?

The listed package contents include:

• 1 × UGREEN HD178 45505 Fiber Optic HDMI Cable, 20M

No additional accessories are specified for this SKU. Confirm the supplied package and warranty terms with the seller before ordering.

Who Should Buy This Product?

The UGREEN HD178 45505 is a good choice for users who:

• Need a 20-metre HDMI connection
• Want 4K@60Hz support over a long run
• Connect a computer to a distant monitor or projector
• Set up a home theatre or conference room
• Need HDR and HDCP 2.2 compatibility
• Prefer an optical cable for a long AV installation
• Can follow directional installation requirements

If you need 4K@120Hz, 8K video or other HDMI 2.1 features, choose a cable specifically rated for those requirements instead.

Why Buy from AIYOZON?

When purchasing the UGREEN HD178 45505 4K Fiber Optic HDMI Cable 20M from AIYOZON, you can enjoy a convenient shopping experience for computer and AV accessories.

• Clear product specifications
• Product compatibility guidance
• Convenient online ordering
• Delivery support
• Customer assistance
• Access to practical connectivity accessories

Check the exact model, cable length and warranty details before placing your order.

Frequently Asked Questions

What is the UGREEN HD178 45505?

It is a 20-metre Active Optical HDMI cable designed for long-distance audio and video transmission.

Does it support 4K at 60Hz?

Yes. The cable is specified for up to 3840 × 2160 at 60Hz, provided the source, display and complete HDMI chain support the required format.

What is its maximum bandwidth?

The stated maximum bandwidth is 18Gbps.

Is it an optical HDMI cable?

Yes. It uses Active Optical Cable technology with optical and copper hybrid transmission.

Does it support HDR?

Yes, HDR is supported when the source, display, content and any intermediate equipment are compatible.

Does it support HDCP 2.2?

Yes. HDCP 2.2 support is listed for compatible equipment.

Is the cable directional?

Yes. Connect the Source/Input end to the transmitting device and the Display/Output end to the screen. Reversing the ends can prevent the connection from working.

Does it require an external power adapter?

No separate external power adapter is specified for this model; its active electronics are powered through the HDMI connection.

Can I use it for 8K or 4K at 120Hz?

No. This model is specified for HDMI 2.0-class performance up to 18Gbps and 4K@60Hz, not HDMI 2.1-class 8K or 4K@120Hz modes.

Can I cut or extend the cable?

No. It is a factory-terminated active optical cable and should not be cut, spliced or re-terminated. Test any required coupler or wall plate before permanent installation.

Can it connect one device to two displays?

No. It carries one source-to-one-display HDMI signal. A compatible HDMI splitter or matrix is needed for multi-display setups.

Final Verdict

The UGREEN HD178 45505 4K Fiber Optic HDMI Cable 20M is a practical option for long-distance display connections where 4K@60Hz video, HDR support and HDMI 2.0 compatibility are required.

Its 20-metre length, 18Gbps bandwidth, Active Optical Cable construction, HDCP 2.2 support and directional connectors make it suitable for compatible home theatre, office, classroom and professional AV installations.

Upgrade Your Long-Distance Display Connection

• ✔ 20-metre active optical HDMI cable
• ✔ Up to 4K@60Hz resolution
• ✔ Up to 18Gbps bandwidth
• ✔ HDMI 2.0 compatibility
• ✔ HDR support
• ✔ HDCP 2.2 support
• ✔ Optical and copper hybrid transmission
• ✔ Directional Source/Input and Display/Output connectors
• ✔ Suitable for compatible TVs, monitors and projectors

👉 Order the UGREEN HD178 45505 4K Fiber Optic HDMI Cable 20M from AIYOZON and connect your distant display with a high-bandwidth HDMI solution.