Zowie also lowered the price on this compared to the old XL2540 by removing the S shield and the shields that go on the monitor getting it to $329 compared the XL2540 which was $400. Now the difference between this and the XL2546K is that the XL2546K includes the S switch, monitor shields, and DYAC.
https://www.amazon.com/BenQ-XL2540K-Flexible-Adjustment-Customizable/dp/B08JHGH42Y

