BenQ ZOWIE XL2731K 27" 16:9 165 Hz TN Gaming Monitor - Manual (Page 21)

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4. Adjust the monitor to the desired viewing
angle. See Viewing angle adjustment on page 19
for more information.
If the monitor has been rotated to portrait mode and height
adjustment is desired, you should be noted that the wide screen
will keep the monitor from being lowered to its minimum height.