USB Wireless Adapter can't see Network

I just swapped out the older xfi gateway with the new xfi gateway (Arris TG4482A).  All of my devices had no problem reconnecting to the network except for a desktop with a Belkin wireless USB adapter.  It can see my neighbors networks, but not mine, it doesn't show as an available network.  The adapter is rated for 2.4GHz and there are many other devices that are connecting to that portion of the network.  I have tried updating the firmware on the adapter, changing the mode settings on the gateway, restarting the gateway and nothing has worked.  The computer is only about 15' away from the gateway, so it is well within range.

We were able to get a work around but I don't really want to keep doing it.  We were able to set a phone as a hot spot and the computer is able to get online that way.  Any ideas on how to get this to work the correct way?  Thank you.