The wireless cards in the LE (Express) are receive only. You would need a TX/RX unit set in transmit mode connected to the ETD (Etherdongle) to send the signal to the LE. There is a jumper on the LE that sets it for wired or wireless operation. One thing that the LE can do is be the first unit in the wired string of components. When in wireless mode, the wired input and first wired output are disabled but the second wired output still works and can be used to connect other devices to the wireless system. Please keep in mind that both the LE and the wireless system is DMX only and the standard output of the ETD is PixelNet so if you are using an ETD, make sure that you flash it with the optional DMX firmware.