From the Manufacturer
Now you can connect to any 10, 100, or 10/100 Mbps hub or switch without opening your PC. The EtherFast 10/100 Compact USB Network Adapter from Linksys allows you to instantly connect to a network from a USB-enabled desktop or notebook PC running any version of Windows that supports USB. The plug-and-play-compatible device attaches to the USB port on your PC or hub USB port via a USB Type A connector. Simply connect a standard UTP Category 5 network cable into the EtherFast 10/100 Compact USB Network Adapter's RJ-45 port, install the included network software drivers, and you are networked.
The EtherFast 10/100 Compact USB Network Adapter is bus-powered, drawing power from the host PC, and requires no external power cords. The 10/100 Compact USB Network Adapter features the maximum throughput supported by USB, easy-to-read LEDs, compact design, a one-year limited warranty, and free world-class technical support.
Product Description
The Linksys USB100M EtherFast 10/100 USB Network Adapter is the easiest way for you to connect to a network. Maybe you have no PCI slots left on your desktop? Maybe you are just to afraid of opening your computer case to put one in? Well this little device simply plugs directly into your USB port, giving you one 10/100Base-T RJ-45 Ethernet port. It's that simple. And because it has such a compact size, it's perfect for notebook computers as well!