HDMI CEC Information for Intel® NUC

Consumer Electronics Control (CEC) via HDMI allows bidirectional communication between your Intel® NUC and your TV, meaning you can control some functions of your Intel NUC with your TV remote. Two types of CEC are available depending on your Intel NUC model—onboard CEC or external CEC.

Onboard CEC
The following Intel NUC Kits have the above external CEC header as well as an onboard HDMI CEC controller that is controlled by the BIOS, which supports bidirectional power on/off control:

  • NUC6CAYH
  • NUC6CAYS
  • NUC7i7BNH
  • NUC7i5BNK
  • NUC7i5BNH
  • NUC7i3BNK
  • NUC7i3BNH
Note Update the BIOS of your Intel NUC to the latest version to access the BIOS settings related to onboard CEC.

To view or change the onboard HDMI CEC settings:

  1. Press F2 during boot to enter BIOS Setup.
  2. Go to Advanced > Devices > Onboard Devices.
  3. In the Legacy Device Configuration pane, enable HDMI CEC Control.

 

Legacy Device Configuration

BIOS Setting Description
TV HDMI Port Configures the HDMI port on the TV that the Intel NUC is connected to. Choices:

  • HDMI 1 (default)
  • HDMI 2
  • HDMI 3
  • HDMI 4
Auto Turn On TV Determines what happens to the TV when the Intel NUC is turned on or resumes from a sleep state.

Disable – TV does not turn on when Intel NUC is turned on or resumes from sleep state.
From S3/S4/S5 Boot (default) – TV turns on when Intel NUC is powered on or resumes from S3/S4/S5 state.
From S3 Resume – TV turns on when Intel NUC resumes from S3 state.
From S4/S5 Boot – TV turns on when Intel NUC is powered on or resumes from S4/S5 state.

Auto Turn Off TV Determines what happens to the TV when the Intel NUC goes to sleep or is shut down.

Disable (default) – TV stays on when Intel NUC is shut down or enters a sleep state.
When S0 to S3/S4/S5 – TV turns off when Intel NUC enters S3/S4/S5 state.
When S0 to S3 – TV turns off when Intel NUC enters S3 state.
When S0 to S4/S5 -TV turns off when Intel NUC enters S4/S5 state.

Wake On TV Determines what happens to the Intel NUC when the TV is turned on.

Disable (default) – Intel NUC stays off when TV is turned on.
From S3/S4/S5 – Intel NUC wakes from S3/S4/S5 power state when TV is turned on.
From S3 – Intel NUC wakes from S3 power state when TV is turned on.
From S4/S5 – Intel NUC wakes from S4/S5 power state when TV is turned on.

Standby by TV Determines what happens to the Intel NUC when TV is turned off.

Disable (default) – Intel NUC remains in its current state when TV is turned off (nothing happens).
Power Button Toggle – when TV is turned off, the Intel NUC action defined for the power button in Windows is triggered.
Sleep Button Toggle – when TV is turned off, the Intel NUC action defined for the sleep button in Windows is triggered.

 

External CEC

An external CEC adapter connects to the CEC header on the motherboard. The header is Molex* part number 53398-0471, with a pinout as follows:

Pin Signal Name
1 5VSTBY
2 Ground
3 PWR_SWITCH#
4 HDMI_CEC

CEC adapters and lids that fit the motherboard header are available from these third party vendors:

The technical product specifications for these models provide details of HDMI CEC expected behaviors.

System Power States
Power state ACPI state
Sleep (Modern Standby) S0 low-power idle
Sleep S1 S2 S3
Hibernate S4
Soft Off S5



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