LG 32LS345H User Manual page 29

✎ This function is only fully compatible with devices having the SIMPLINK logo.
✎ To use SIMPLINK function,use high-speed HDMIⓇ cable (with CEC
(Consumer Electronics Control) feature added). High-speed HDMIⓇ cable has
No. 13 pin connected for information exchange between devices.
✎ When changing to another input, the SIMPLINK device stops.
✎ If a third-party device with HDMI-CEC support is added, the SIMPLINK device
may not work normally.
✎ [Depending on model] When selecting or playing media with the home
theater chosen as the audio device,
Be sure to connect with Optical cable (sold separately) to use the HT Speaker
function.
HT Speaker is automatically connected.