1. The two devices must be connected to power outlets and electrical wiring which belong to the same electrical system.
2. Connect the adapter directly to the wall socket instead of a powerstrip/surge protector. Filtering circuits in the surge protector can interfere with power line technology.
Note: By default all D-Link Powerline devices are configured to communicate with each other. Try factory resetting the adapters to establish communication if the above fails.
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Power on each adapter
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Press and hold the reset button (small pin hole) for 10 seconds and release.