Cisco Linksys AE3000 USB WiFi Wireless N Dual-Band USB WIFI Adapter 802.11n (Certified Refurbished) This Certified Refurbished product is fully tested and certified by Linksys to be look and work like-new. The product includes all original accessories and is backed by a 90 Day Manufacturers warranty Selectable Dual-Band with 3 X 3 for 450 Mbps speed MIMO technology uses multiple antennas to create a robust signal that travels farther and reduces dead spots Performance Investment Protection: Compatibility with Wireless-A (802.11a) Wireless-B (802.11b) and Wireless-G (802.11g) Standards WPS (soft) push button and pin support