John upgraded his internet but his laptop says it only has 2.4 GHz available. Leo says that means his router is only 2.4 GHz. 802.11N routers are dual band with 2.4 and 5 Ghz bands. And there's even tri-band routers that offer two 5 GHz channels along with a 2.4 GHz channel. His laptop may also just be able to connect to 2.4 Ghz. John should look in his BIOS and software to see if the 5.0 GHz band is turned off.