Hi, All the TP-Link powerline adapters are compatible with each other. If you want to add another single powerline adapter into the current 4220, it is suggested to buy a 4 series, like TL-WPA4220....

Hi, The cable plugged into the camera is an USB cable which connects the power adapter provided to power the camera. You can refer to the user manual to get more information....

Hi, What is the light status of the NC220 when it lost connection? At that point, is there any error message pops up on the tpCamera APP? Like the camer is offline or so? Did it obtain IP address?...

Hi, For ethernet backhaul, you can refer to this thread: https://community.tp-link.com/en/home/forum/topic/98898?page=1&t=2019%2F07%2F02%2008%3A17%3A29%20%2B0000 In your current topology, the...

Hi, What is the current network topology? When the internet speed goes slow down, please disconnect the slave Decos and connect your computer to the main Deco by wired cable and run a speed test....

Hi, Thanks for your feedback. For this legacy device, you can use the MR200 or the RE450 to provide internet to get better signal strength as a workaround for now. There is no option to downward...