Ethernet cables can transmit video, audio, and power

Ethernet cables, such as Cat5e and Cat6, are capable of transmitting more than just internet data. They can also be used to carry video, audio, and electrical power.

For long-distance video transmission, Ethernet cables can act as a link between HDMI extenders. By using a transmitter on one end and a receiver on the other, users can send video signals to distant devices like projectors. However, this is considered a niche solution, as active optical HDMI cables can also manage long distances and may better support high-end formats like 4K at 120 Hz.

Another practical application is Power over Ethernet (PoE), which allows a single cable to transport both data and electricity. Additionally, with the correct adapters, these cables can replace multiple separate lines by carrying several analog audio channels.