Upgrade to AC Performance Today's households are connecting more devices than ever before – with more and more iPhones, Androids, tablets, and laptops laying around in any given home, it's important that each device gets the speed and coverage it deserves. By upgrading your laptop and desktop computers to AC, you can immediately enjoy the benefits of faster wireless speeds and better connectivity. Delivering Wi-Fi dual band speeds of up to 150/433Mbps, the DWA-171 is the perfect solution for those looking to enjoy smooth HD video streaming, fast file transfers and lag-free video chatting – all with less wireless interference for maximum performance. Backward Compatible While the Wireless AC Dual Band USB Adapter delivers blazing fast AC speed to your laptop or desktop computer, it’s also backward compatible with older Wi-Fi routers and devices – no updates or adapters necessary. Maximize your AC Performance While your new AC adapter delivers the latest and the greatest in wireless performance to your laptop and desktop computers, you can further optimize your home network's performance by upgrading your current router to one of D-Link’s AC Cloud routers. By adding an AC router to your home network (DIR-810L, DIR-820L), you can avoid speed bottle-necks and maximize your AC performance.