Dell IN1720 User Manual page 27

To remove stand base from the monitor:
1. Place the monitor panel on soft cloth or cushion on a stable flat table.
2. Press and hold the release latch, while pulling the stand base away from the monitor.
Attaching the Dell Soundbar(for IN1920 only)
NOTICE: Do not use with any device other than the Dell Soundbar.
To attach the soundbar:
1. Working from the back of the monitor, attach 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 from the Soundbar Power Adaptor.
4. Insert the mini stereo plug from the back of the Soundbar into the computer's audio output jack.
Removing the Stand for VESA Wall Mount
IN1720:
IN1920: