Selecting the wired network connection method
Connect the speaker to your wireless router with a commercially-available LAN cable, then connect the router to the computer.
For details, see "Connecting to a wired network."
To turn off the wireless function
You can turn off the wireless function. With the speaker turned on, press and hold both the NETWORK button and WPS button. When the 
(BLUETOOTH) indicator and NETWORK indicator begin to flash at the same time, the wireless function turns off. To turn on the wireless function, do the above again.
Note
- If you turn off the wireless function, Wi-Fi network, BLUETOOTH and NFC functions will not be available.