ActionTec ECB5240M User Manual page 6

6. Make sure that the Power and Coax LEDs are illuminated solid green.
If the Coax LED does not turn green, there is no Internet signal
transmitting across the coaxial network, or the router does not
support MoCA.
When complete, the setup should look similar to the figure below:
Coaxial
Outlet
Additional devices can be connected to the other Ethernet ports on
the Adapter.
Managed 4-Port ECB with Bonded MoCA
Coaxial
Cable
Power
Adapter
Power
Outlet
ECB5240M
Power
Coax
5
Ethernet
Cable
Ethernet Port
of Device