Tech support helped me figure that out

I had to call tech support to help me set it up correctly

At this time I am not satisfied with TP-LINK's tech support.

Tech support was extremely helpful and was only on hold for about 3 minutes

For over two weeks shows an "authentication error"; the fix was uncheck the "maxstream", then phones and PCs got connected, but signal was very weak and both rokus can't get connected.(tech support told me about turn off Maxstream, but also recommended leave the channel selector on auto).The solution was set it on channel 11, then signal improved and rokus connected.

As for the downsides: the firmware lacks a few valuable features such as captive portal functionality and hostname configuration, the wired ports are only 10/100Base-T, and troubleshooting usually boils down to performing a factory reset and trying again

The signal is sufficient to give me about 30mb/s -- enough to stream HD on Youtube without a problem

As for the downsides: the firmware lacks a few valuable features such as captive portal functionality and hostname configuration, the wired ports are only 10/100Base-T, and troubleshooting usually boils down to performing a factory reset and trying again