Allied Telesis GS950 PS V2 Series - Figure 32: Marking the Locations of the Bracket Holes on a Concrete Wall

GS950 PS V2 Series of Gigabit Ethernet PoE+ Switches Installation Guide
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Figure 32. Marking the Locations of the Bracket Holes on a Concrete Wall
4. Place the switch on a table or desk.
5. Use a drill and 1/4” carbide drill bit to pre-drill the four holes you
marked in step 3. Please review the following guidelines:
 Prior to drilling, set the drill to hammer and rotation mode. The
modes break up the concrete and clean out the hole.
 Clean out the holes with a brush or compressed air.
6. Insert the four anchors into the holes.
7. Have another person hold the switch at the selected wall location while
you secure it to the wall with the four provided screws. Refer to Figure
33 on page 70.