The D-Link DUB-E100 is a Hi-Speed USB 2.0 10/100Mbps Fast Ethernet Adapter specifically designed to plug into an available Universal Serial Bus (USB) port on a desktop or laptop PC running Microsoft Windows XP, Me, 2000 or 98SE. DU-E100 is a 10/100Mb Dual Speed Ethernet Adapter. Based on USB 2.0, the DUB-E100 extends the transfer speed of earlier USB Fast Ethernet adapters to true 10/100Mbps connectivity. As a USB device, the D-Link DUB-E100 eliminates the need to use an ISA, PCI, or PC Card slot to add LAN connectivity to a PC desktop or laptop computer. Installation and use are further simplified by living up to USB s out-of-the-box installation approach to connecting computer peripherals. You will not need to open the case of your computer, nor will you be required to set IRQ s. The D-Link DUB-E100 represents the simplest way to connect your computer to an Ethernet based network. The D-Link DUB-E100 provides a standard RJ-45 connector for a quick and simple method of connecting to an Ethernet 10Mbps or Fast Ethernet 100Mbps based LAN via a network hub or switch. The built-in USB 2.0 cable connects directly to your computer or laptop. Power for the DUB-E100 is provided directly by the USB bus, eliminating the need for an external power adapter. It also supports USB s energy saving suspend and resume functions to minimize power consumption, which is especially useful for laptop/notebook users.