@Ali_boysad What is the model number? Is it TL-WR840N? What is the current operation mode of it? Please provide more information about the current problem so that we can give you a specific answer...

@Luke71 Please hard reset it again by holding the reset hole for 10s. And then open the tpPLC utility and pair them with the powerline key printed on the back panel. Note: You can connect the...

@Alana Hi, you can buy a single powerline extender to provide ethernet connection and boost wifi signal. Like the TL-WPA4220, TL-WPA8630P. You can read the story for more information as well....

@Jk1503 The TL-WPA4220 can work with the Deco P9 to provide ethernet connection and boost the wifi signal. You can connect them like Deco P9--main unit( PLC) -- power line -- extender unit. May it...

@Nafeez The TL-PA9020 can be added into the current network TL-WPA7510KIT. You can read this story to get more information: https://community.tp-link.com/en/home/stories/detail/564 May it help.

@Panania.Jim You can connect the RE450 to the MR400 directly by wired cable. The MR400 works in router mode, and the RE450 works in access point mode. Below is the instruction to set it up as the AP....