That looks like a standard wifi repeater. Nothing special about being an ATT version.
Depending on your house setup and situation, there are better options available that'll give better reliability and/or bandwidth.
In order of best to worst:
- Running new ethernet wire is the best option, but takes some skill and not doable in an apartment unless you have a really nice landlord.
- Many homes have cable tv outlets spread throughout the house as cable and satelite tv was very popular for the past 3 decades. MOCA is a newer technology that utilizes these coax cables, but in a higher frequency band, to run ethernet from on end of the cable to another. Takes alot less skill than running ethernet, and is plug and play. You...