1) After the HDMI cable has been produced, its length is fixed and cannot be changed. Because the connection between the HDMI connector and the cable can only be done by professional staff inside the factory, the user cannot cut or lengthen the length of the HDMI cable himself. However, this is not the case with CAT-6 cables, which are very popular and can be handled and wired by the user himself, making the operation simple and convenient. 2) HDMI connectors are relatively large, long HDMI cables are used to cover up (wiring), and HDMI cables are not easy to bend, in the wall pipes or wiring slots, HDMI cables are not easy to stretch through the tube, and CAT-6 will not have these problems.