tp-link s archer t4u is an ac1300 wireless dual band usb adapter comes with the next generation wi-fi standard 802.11ac, 3 times speeds of wireless n speeds, giving users the ability to access crystal clear 5ghz band at 867mbps or legacy 2.4ghz connections at 400mbps. ultra-fast usb 3.0 perfectly match up with 802.11ac, and bundled extension cable- suitable for home deployment. with high-speed usb 3.0, archer t4u breaks through the low-speed usb 2.0 limitation for 802.11ac high-speed experience, the archer t4u is the superior choice for seamless hd streaming, online gaming and other bandwidth-intensive tasks. interface usb3.0