Welcome to the new Bose.ae
Stores

Connecting the optional bass module

Connect the bass module to an AC power socket

In the Bose Music app, from the My Bose screen (accessible via the headphone and speaker icon in the upper-left corner), select your soundbar

Tap the soundbar image in the bottom-right corner of the screen

Tap Settings > Accessory Speakers > Add Bose Accessory Speakers

Follow the app instructions