the hdmi ethernet adapter is no power supply needed, for the far distance quality 1080p conversion.
if you need the far distance transmission, this device will help you save money compare with using the long expensive hdmi cable. not support connect to wifi router directly.
hdmi extender support highest video resolution 1080p and the signal rate up to 2.5gbps. please remind this model does not support hdcp and do not attach them to a hdmi splitter to get the image on 2 or more monitors
please kindly note that the transmitter and receiver are connected is extremely important
please note other cables can not work with this device.