It allows for both user-driven control of devices by remote control as well as automated actions performed by the devices on your behalf. The purpose of HDMI-CEC is to allow a single remote control or device to control other devices in a multimedia setup. The software side is a communication standard built on top of the existing AV.link protocol. The physical side of things is a single dedicated bi-directional wire connection that occupies pinout number 13 on the HDMI cable standard and carries the signals between linked HDMI-CEC compatible devices. HDMI-CEC has both a physical and software element. HDMI-CEC, short for HDMI Consumer Electronics Control, was first defined with the release of the original HDMI 1.0 standard and formalized for active use in 2005 with the release of HDMI 1.2a, an early update to the High-Definition Multimedia Interface (HDMI) standard. Here's how to determine if your TV has it and how to turn it on. This feature makes your devices work better together but is often disabled by default.
HDMI Consumer Electronics Control, HDMI-CEC, is an HDMI feature on many TVs and media devices.
