D-Link DCS-942L Faq page 32

Step 3: Depending on the material of the wall or ceiling, use proper tools to drill two holes
where you marked. If the wall is made out of concrete, drill the holes first, then insert the
plastic anchors to support the screws.
Step 4: Place the mounting base over the holes that are in the wall or ceiling. Make sure to
align the mounting base holes with the holes in the wall or ceiling. Use the supplied screws
to attach the mounting base to the surface of the wall.