@eddy989 Electronic devices for household use should be designed so that they are able to withstand repeated power off/on cycles, even if it's a type of device that most users will have powered on...

@HamxaJutt Hi, Log into the C80's admin GUI (or use the Tether app) and in the 5 GHz section of the "Wireless" menu change the setting for "Channel" from "Auto" to "36" and save it. Then check again...

@HamxaJutt Hi, Have you looked in the menu seen in the screenshot shown in this thread? https://community.tp-link.com/en/home/forum/topic/244720

@Edinet Yes. According the photos in the documents for which zexoni70 provided the links, it appears that only the Broadcom chip that handles the 5GHz Wi-Fi is different between AX73 V1.0 and AX73...

@eddy989 Like terziyski said, you should test it with at least one more (known-good) cable before any conclusions can be made. If the Internet LED always stays dark when you are connected via the WAN...

@Edinet According to photos on the Internet the AX73 V1.0 uses a Broadcom BCM43684 chip for the 5 GHz, 4804 Mbps Wi-Fi part, while the AX73 V2.0 uses the newer Broadcom BCM6715 chip for the same...