Linksys Dual-Band AC1200 Wireless USB 3.0 Adapter (WUSB6300)- (Certified Refurbished) Next Generation Wireless Technology - Connect and upgrade your laptop or desktop computers to the newest, most powerful wireless-AC technology. Ultimate Wireless Speed and the Power of Dual-Band -Up to 867 Mbps speed* on Wireless-AC 5 GHz band or up to 300 Mbps speed* on Wireless-N 2.4 GHz band. HD Video and Gaming Ready - Stream HD video and online gaming simultaneously throughout your home. Wi-Fi Security - Supports up to 128-bit encryption (WEP, WPA and WPA2). Easy Setup with Router or Access Point and Easy Computer Setup and Compatibility - Support WPS (Wi-Fi Protected Setup) button for easy connection with wireless router or wireless access point. Easy to use CD setup wizard and compatible with Microsoft Windows 8, 7, Vista SP1/SP2 and XP SP3.