@Yevhen Hi, the latest firmware on the Deco M4 1.4.3 is not supported network optimization yet and it would be added in the further firmware release; As for the slow wireless access speed on the...

@Yevhen Hi, currently, it is not supported to manually change the wireless channel on the Deco units; As for the firmware that would change the 5ghz from band 1 to band4, it is because, in some...

@Vess Hi, Would two satellite Decos blink red when they are disconnected? Would rebooting temporarily restore the connection? If placing next to the main deco, would the same issue continue? Thank...

@LadefogedT Hi, it is recommended to update the Deco M9 plus to be the latest firmware 1.5.1 first: https://www.tp-link.com/support/download/deco-m9-plus/#Firmware Deco...

@TWPS Thank you very much and I have forwarded your case to the senior engineers. Please have a check of your email box.

@ChrisC84 Hi, Could you please provide us a picture of your network topology? As for the WD my cloud NAS, could they get internet service from the deco, but not able to be reached by other LAN...