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hy guys. first of all try to speak sample english, im italian thanks xd........my problem is about range extender TL-WA854RE and my router TD-W8901G. Devices situed in the room where there is the extender work good, and same for devices near modem. the problems are for the devices wich go from extender to router, like mobile phones. infact, if i catch the wifi near extender and than i go near modem, also if i have the maximum line, i cant go on internet. while if i catch the wifi near modem and than i go near extender, it works good. it's like the extender create a conflict with the modem when a devices is near the modem (where the connection should be optimal). someone can help me? the support is working for me (i hope) since 3-4 days ago. thanks