Hi all, I have a single E4 unit. Can this be used to extend my router. I have an SSID and password on the router as supplied by ISP and would like the E4 to extend this. Is this possible? Its the spec

Hi all, I'm having the following problem and the tp-link support has been unable to tell me how to fix it. I had 6 X20's. 5 were wired up with ethernet connections. 1 was connected to the 'Main' via w