From now on, the room temperature will rise and the AC adapter and the main body of the device will be quite hot.There is no particular description about turning the power on / off in the instruction manual of the product, but WiFi is only for PCs, but should I turn off the power when not in use?I'm worried because I noticed "broken in less than a year" in the product reviews on the mail order.My house has CATV in addition to WiFi, and the CATV modem is told by the construction worker that "the power should not be turned off", so I will keep it energized, but what about optical lines? mosquito.