D-Link AC1750 Guide D'installation Rapide page 6

When the Status LED turns solid green, this indicates that the DAP-1720 is
4
securely connected to your wireless router or access point. You can now
unplug and move the DAP-1720 to a location between your wireless router
and the area that you need wireless coverage.
If the signal strength indicators are showing one single
amber bar or if the DAP-1720 is not connecting, move
the DAP-1720 to a wall outlet closer to your wireless
router or access point.
4 DAP-1720 Install Guide