I was having a trouble connecting Wifi of my IP camera, FI8910W, to my new router, SBG6580.
I got the new router from TimeWarnerCable after I upgraded my Internet speed. The router was actually a good one; I like it a lot. It supports Dual band 5GHz 802.11n and it is a Modem and Wifi router combined device.
the tech spec stated "802.11b/g/n".
After wasting a few hours, I ended up using both Wifi routers together: one that covers 5GHz 802.11n and another that covers 802.11b/g/n. Since one of them is using a different frequency, 5GHz, I think they should work without much signal interfere.