Rear panel
Bluetooth button ( 
)
Used to pair the speaker with Bluetooth audio sources. link
NETWORK connector
Used to connect the speaker to a wired Ethernet network.
LINE input connectors
Used to connect analog audio devices to the speaker. link
OPTICAL input connector
Used to connect digital audio devices to the speaker. link
HDMI connector (eARC)
Used to connect the speaker to a TV. link
USB (Type C) port
Used to connect USB (Type C) storage devices (such as USB flash drives). link
CONNECT button
Used for Wi-Fi setup.
AC inlet
Used to connect the power cord. link