D-Link DIR-412 User Manual page 3

3. Plug one end of Ethernet cable into the DIR-412, and the other end
into your PC.
4. Plug the power adapter to the router and connect to an outlet or
power strip. Wait about 50 seconds for the router to boot.
5. Verify the link lights on the router. The power light, Internet light, and
the Wireless LAN light should be lit. If not, make sure your computer
and router are powered on and verify the cable connections are
correct.