LB1 High Performance New USB 3.0 to RJ45 Gigabit Ethernet LAN Network Adapter for Dell OptiPlex 990 USFF Desktop 10/100/1000 Mbps THE SIMPLE WAY TO CONNECT TO ETHERNET Why take apart your computer or mobile device when you can convert a USB port into an ethernet port? SURF THE WEB AT LIGHTNING FAST SPEEDS You won't believe the difference! Ethernet makes video conferencing, gaming, streaming and downloading large files easier than ever before SO EASY TO USE Driver included for quick and simple setup. Once it's done, just slip in this adapter, connect the ethernet cord and you're ready to go online UNIVERSAL DESIGN Works with computers, laptops, notebooks and mobile devices with a USB 2.0 or 3.0 ports. SATISFACTION GUARANTEE If you're not fully satisfied with this ethernet adapter within 60 days of your purchase, we'll refund your money