D-Link DAP-3712 User Manual page 10

Section 2 - Installation
3. Thread a standard RJ-45 Ethernet cable through the cover
for the PoE port on the underside of the DAP-3712. Insert
the cable into the PoE port, then attach the cover to the
device.
4. Connect the adjustment kit to the base of the DAP-3712
by pressing it in until it clicks and locks in place. Use the
adjustment kit to position the antenna at the desired.
D-Link DAP-3712 User Manual 10