I had tried to change my Wifi 5G network name on my Arris TG1682G from something like BGHT1465F3F8-5G to something simple like Aces5G. Once I did that the 5G network was gone from my list of networks and it could only see the 2.4GHz. Other devices such as my cell phone and Xbox One could find it though. When I looked around for a solution I came across some information telling me that my wifi adapter, Realtek RTL8188EE 802.11 bgn Wi-Fi Adapter, did not support 5GHz. I now understand why that is but it was confusing since I was already using the 5G network before I changed it.