Connect the end labeled “Source” to the source device, such as a media player, receiver, or computer, and connect the end labeled “Display” to the television, projector, or monitor. Follow the arrows or markings on the connectors, because directional HDMI cables use active circuitry that requires this signal flow and may not transmit video when reversed.

Choose active copper directional HDMI cables for moderate-length runs when a built-in active chipset and features such as Ethernet, audio return channel, and 4K support meet the installation needs. Choose fiber optic directional HDMI cables for longer runs, in-wall installations, tight spaces, or areas with electromagnetic interference, since they support long-distance transmission and can be more flexible and less susceptible to interference.

Compare directional HDMI cables by supported resolution and refresh rate, chroma subsampling, HDR, color depth, aspect ratio, and bandwidth, such as 4K at 60 Hz, 4:4:4 chroma, HDR, deep color, and up to 18 Gbps where required by the system. For audio, check support for Audio Return Channel (ARC), channel capacity, Ethernet, and formats such as Dolby Atmos, Dolby TrueHD, and DTS-HD Master Audio, then confirm the cable’s source and display ends match the signal direction.

When routing directional HDMI cables through walls, confirm the source and display ends before pulling the cable, and select an in-wall-rated option when the installation requires one. Plan the route to accommodate the connector heads and cable bend, especially in tight spaces, and choose a length that avoids excessive pulling or strain.