Hi, I am thinking of purchasing one of the above travel routers. Currently I have a Optus AC800s Hotspot Broadband modem which has a limited Internal range. It has been recommended to me to buy ome of the TL-WR902AC routers which would extend my range indoors. This recommendation was made by a Moderator in the Yes Crowd. My question is TP Link is, how would it work with the modem I have? And is it powered by battery/mains? Thanks in anticipation