My 4G USB modem (Huawei E3276) behaves a little erratic when I connect to my 4G wireless router (TL-MR3420), but works well when I connect it directly to my laptop. When I googled for solutions, I observed it could probably be because of insufficient power generated by the router. In this site http://www.ofmodemsandmen.com/powert.html
it is suggested more power be supplied through a Y USB cable. I would like to know will this harm the router anyway? And if anyone else has tried something similar?