HDMI Cable 20M v1.4a 4K Gold Connectors High Speed

A 20-metre HDMI cable provides the longest practical run for a passive (unamplified) HDMI cable on a standard v1.4a connection. Signal integrity at this length depends on cable quality: full copper conductors with gold-plated connectors maintain the signal with minimal impedance and corrosion at the contact points.

HDMI v1.4a supports 4K resolution (3840×2160) at 30Hz and 1080P at 60Hz, making it appropriate for standard 4K displays and 1080P presentations and conference room installations where the source and display are in the same room or adjacent spaces within 20 metres.

Gold-plated connectors reduce contact resistance and prevent the oxidation that can cause intermittent signal issues at the connector interface over time, a consideration in permanent installations where the cable is plugged in and left in position.

For direct cable runs beyond 20 metres, an HDMI extender over Cat5e/Cat6 is the recommended approach rather than a longer passive cable, which risks signal degradation.

For AV and security system installers completing direct 20-metre HDMI connections in rooms and adjacent spaces across London and the UK, this cable provides the standard specification for this length.

Key Features

• 20 metre passive HDMI cable: no extender unit required
• HDMI v1.4a: 4K at 30Hz, 1080P at 60Hz support
• Gold-plated connectors: low contact resistance and corrosion resistance
• Full copper conductors for signal integrity at 20 metre length
• Longest practical passive HDMI run length
• For runs beyond 20m use a Cat5e/Cat6 HDMI extender instead