Allied Telesis AlliedWare Plus - Figure 64: Marking the Locations of the Bracket Holes on a Concrete Wall

Chapter 8: Installing the Switch on a Wall
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Figure 64. 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 a 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.
 Allied Telesis recommends cleaning out the holes with a brush or
compressed air.