I have a Netgear R6300v2 holding over 15 devices on wifi. I am a gamer and I am getting terrible signal with the 5ghz band from my laptop. I heard that external high gain antennas are far better than the crappy internal antennas inside the R6300v2, so i checked to see if the router had a sma port on it. It didnt. I remember seeing sma to usb adapters. If i have an adapter connected to the router with an antenna on it will it work as an external antenna? If not, are there any modifications to the router mobo that I can do? Thanks.