LB1 High Performance 300Mbps Wireless-N Wifi USB LAN Network Adapter Mini Size w/ WPS Button for Dell 780 Optiplex SFF - Supports 802.11 N and backward compatible with 802.11 a/b/g Products (2.4GHz WLAN) GO WIRELESS THE SIMPLE WAY Equip an older desktop or laptop WiFi technology without having to make expensive upgrades to your hardware SO SIMPLE TO USE Just run the included setup CD and you're ready to go! Once the software is installed, you can simply insert the adapter into the USB port and go online COMPATIBLE WITH MANY COMPUTERS Only needs an available USB 1.1, 1.2 or 2.0 port and Windows 2000, XP, Vista, 7, 8 or 8.1 or Linux 2.4 or later operating system installed INTELLIGENT TECHNOLOGY Antennas operate at the fastest possible speeds available for optimal performance and stability SATISFACTION GUARANTEED If you're not pleased with the performance of this adapter within 60 days of your purchase, we'll refund your money!