This is expensive scrap! I have a Dell S2817Q monitor + VESA mounting bracket. Vibrations on the table are amplified for the monitor itself (vibration resonance). So when I type, my monitor basically jumps up and down. The second problem: It is not fixed. When I decided to rotate the monitor 90 degrees, this mount adapter didn't hold it. For the record, I have 3 other monitors with a built in VESA mount and haven't seen any of these issues on the ones that had the desk/mounting brackets installed.
MFP inkjet Epson L3150, color, A4, black
54 Review
Wall bracket ONKRON M4 for TV 32"-65", tilt-swivel, up to 35 kg, black
46 Review
ONKRON D101FS monitor mount 13"-34" desktop, up to 8 kg, tilt, swivel, black
64 Review
23.8" Monitor Xiaomi Mi Desktop Monitor 1C, 1920x1080, 60Hz, IPS, black
44 Review