Single-band routers use a 2.4 GHz band and are limited in range and speed compared to dual-band routers, which use both the 2.4 GHz and 5 GHz band. Dual-band routers are more efficient, have longer range, are less prone to interference from household devices, such as microwaves and older cordless phones, and are faster. However, this efficiency is maximized when using 5 GHz compatible devices. When 5 GHz devices are not within range, only the 2.4 GHz band gets used. Dual-band routers are also more costly than single-band routers. If you have newer (5 GHZ) and older wireless devices (2.5 GHZ), use a dual band.
Yeah it works fine. I have the PS3, TV, one computer, ooma, hardwire to the D-Link DIR-825. I have a laptop doing N, a netbook doing G, a Nintendo Wii doing B and a garmin doing something. Yeah I have no real problem. IF you have qwest, you have to change the ip address to http://192.168.5.1/ for some reason.
put more info so we know what you are asking. Most modem would need some kind of router so you can add ethernet and wifi later on. Qwest had a modem that could do G, but I wanted an N so I got the basic modem and hook up a n router like everyone here. My parents have a modem that has wireless/router built in and it was fine for them and they didn't need another router. So if you can't expand then get an add on router, most G speed you can't really tell a performance different from one another so just use what you got. If your modem has a router/ wifi built in then it is fine.