This photo probably shows it clearest.
https://www.pulse-eight.com/generated-assets/products/0000381.jpeg
Control your TV from Kodi, or vice versa! USB - CEC Adapter
HDMI IN (to PC)
HDMI OUT (to TV)
DATA - this is the USB and allows Kodi/LE/Kernel to read/write CEC.
I have the internal versions which behave exactly the same way (except the HDMI IN-OUT are on those AA pins.) the other connection in the NUC manual is for the USB 2.0 that the pulse8 is connected to. [DATA above]
It shows up here
Code
nuc11:~ # lsusb | grep Pulse
Bus 003 Device 003: ID 2548:1002 Pulse-Eight CEC Adapter
