Dell 2209WA Monitor - Manual (Page 30)

After attaching all necessary cables to your monitor and computer, (See Connecting Your Monitor for cable attachment,) use the cable management slot
to organize all cables as shown above.
Attaching the Soundbar (Optional)
To attach the soundbar:
Removing the Stand
CAUTION: Do not use with any device other than the Dell Soundbar.
NOTE: The soundbar power connector (+12 V DC output) is for the optional Dell Soundbar only.
1. Working from the back of the monitor, attach the Soundbar by aligning the two slots with the two tabs along the bottom of the monitor.
2. Slide the Soundbar to the left until it snaps into place.
3. Connect the Soundbar with the DC power connector.
4. Insert the mini stereo plug from the back of the Soundbar into the computer's audio output jack.
NOTE: To prevent scratches on the LCD screen while removing the stand, ensure that the monitor is placed on a soft, clean surface