So my brother doesn't get internet in his part of my house so I was looking into options for that and someone suggested this http://www.bestbuy.com/site/tp-link-wireless-n300-wi-fi-extender-starter-av500-powerline-adapter-kit-white/2080319.p?id=1219528555613&skuId=2080319 I'm really good with computers but when it comes to internet stuff like range extenders in know almost nothing about it. So my question is, Would this give him Wi-Fi? and Can you use two of these on one router?