Cisco 521 Manual page 17

Follow these steps to mount your access point on a suspended ceiling:
Step 1
Determine the location on the ceiling where you intend to mount the
access point.
Step 2
Select the appropriate T-rail clip for your suspended ceiling and
open the clip to the maximum.
Step 3
Place the clip over the T-rail and close it to the appropriate (A, B,
or C) detent.
Step 4
Tighten the two T-rail locking screws to prevent the clip from
sliding along the rail.
Step 5
Observe the T-rail width detent letter (A, B, or C) that corresponds
to the T-rail width.
Step 6 Align the corresponding (A, B, or C) holes on the mounting plate
over the T-rail mounting plate holes.
Step 7 Hold the mounting plate and insert a 6 x 32 x 1/4 in. flat head screw
into each of the four corresponding (A, B or C) holes and tighten.
Step 8 If needed, drill or cut a cable access hole large enough for the access
point cables and pull the cables through the hole until you have
about 1 ft. of exposed cables protruding from the hole.
Step 9
Attach the access point to the mounting plate.
Quick Start Guide: Cisco 521 Wireless Express Access Point
17