I just bought a used Acer Aspire V5 Model 6896 which the seller wiped prior to selling. It is running Win 8 and he had installed a new wifi adapter (Intel AC7620). The Intel card ran great for him, so I am assuming when he wiped the laptop clean it removed whatever he had set up so that the system recognized the new intel wifi card. I can not get Win 8 to see the Intel card - there is no sign of a wifi card when I go into Network Adaptors. The wireless Bluetooth IS recognized however and shows up as Intel 7260 in Device Manager. I cannot find the drivers for the wifi, only Bluetooth.
We have an older router but it works well with all our other equipment.