Ubiquiti NanoBeam M2 Quick Start Manual page 8

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4. If you are using the optional NanoBeam Wall Mount Kit,
then skip to step b.
a. To attach the Ball Joint Mount to the wall, insert a
fastener (not included) through the center of the ball
joint, and into the wall. Securely tighten the fastener.
Proceed to step 5.
b. To attach the Ball Joint Mount to the wall, insert the Wall
Mount Kit screw through the center of the ball joint,
through the Wall Mount Kit plate, and into the wall.
Securely tighten the screw.