Do you need a longer HDMI cable? Use this RCA Inline Extension Coupler to connect 2 shorter passive HDMI cables to create a longer cable run. This coupler carries high-definition 2160p video and digital audio signals and supports 3D Ethernet and audio return channel. It works with devices such as Blu-ray HD satellite HD cable DVD HDTV and A/V receivers. Please note: if you have older standard HDMI cables a passive run can be up to 49 ft. A cable run of Premium High Speed passive cables (HDMI 2.0) should not exceed 25 ft.