1 Ethernet port Use an Ethernet cable if you want to
connect to a router, computer, or
network-attached storage (NAS)
device (optional).
2 Stereo audio in (3.5mm / 1/8") Use to connect an external audio
device, like a turntable or CD player.
3 Join button Press to connect to your Sonos
system during setup.
4 AC power (mains) input Use only the supplied power cord
(using a third-party power cord will
void your warranty).
Note: Insert the power cord firmly
until it is flush with the bottom of the
speaker.