What use either the 2.4 GHz or 5 GHz frequency range?

802.11nMain article: IEEE_802.11n-2009

802.11n is a recent amendment which improves upon the previous 802.11 standards by adding Multiple-input_multiple-outputantennas (MIMO). 802.11n operates on both the 2.4GHz and the lesser used 5GHz bands. The IEEE has approved the amendment and it was published in October 2009.Answers.comAnswers.comPrior to the final ratification, enterprises were already migrating to 802.11n networks based on the Wi-Fi_Alliancecertification of products conforming to a 2007 draft of the 802.11n proposal.