HP L2401x

4. Remove the four screws securing the lower edge of the VESA adapter plate to the bracket hinge.
Figure 2-10 Removing the screws securing the VESA adapter plate
5. Slide the VESA adapter plate toward the lower edge of the monitor and off the bracket hinge.
Figure 2-11 Removing the VESA adapter plate
VESA Adapter Plate
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