Edimax Technology EA-ID6D - Manual (Page 3)

Wireless base stations with antenna detachable feature:
As a matter of broadcasting your wireless signals to your home/office
environments to get wider or longer coverage, the antenna generates wide,
directional signals to cover your home/office environments.
NOTICE:
The wall mount feature is mainly recommended to be used when your
wireless base stations are hidden over the ceiling or some kind of
anti-theft cases. So that your base stations are ‘invisible’ and signals can
still be effectively transmitted through the external antenna.
QIG-ED-2406-V1 3