DUAL BAND WIRELESS USB ADAPTER ARCHER T4U ALLOWS YOU TO CONNECT A DESKTOP COMPUTER OR A LAPTOP TO A DUAL BAND WIRELESS NETWORK AT UP TO 300MBPS OVER 2.4GHZ OR 867 MBPS OVER 5GHZ. IT BRINGS YOU THE FLEXIBILITY TO SELECT BETWEEN 2.4GHZ AND 5GHZ BANDS TO ACCOMMODATE DIFFERENT APPLICATIONS YOU ARE RUNNING. FOR BANDWIDTH-INTENSIVE APPLICATIONS LIKE HD VIDEO STREAMING AND MULTIPLAYER GAMING THE LESS CROWED 5GHZ BAND IS MORE FAVORABLE. FOR SIMPLE TASKS LIKE EMAILING OR WEB SURFING THE TRADITIONAL 2.4GHZ BAND IS GOOD ENOUGH COLOR BLACK.