Cisco Linksys AE2500 USB WiFi Wireless Dual-Band 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 Linksys/Cisco AE2500 802.11n Wireless LAN USB 2.0 Adapter IEEE 802.11b/g/n standards USB 2.0 interface Two (2) internal antennas 128-bit encryption Up to 300 Mbps wireless speeds Dual-band selectable 2.4 GHz and 5 GHz