The D-Link DUB-E100 is a Hi-Speed USB (Universal Serial Bus) 2.0 10/100 Mbps 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. Based on USB (Universal Serial Bus) 2.0, the DUB-E100 extends the transfer speed of earlier USB (Universal Serial Bus) Fast Ethernet adapters to true 10/100 Mbps connectivity. As a USB (Universal Serial Bus) 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 & 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 & simple method of connecting to an Ethernet 10 Mbps or Fast Ethernet 100 Mbps based LAN via a network hub or switch. The built-in USB (Universal Serial Bus) 2.0 cable connects directly to your computer or laptop. Power for the DUB-E100 is provided directly by the USB (Universal Serial Bus) bus, eliminating the need for an external power adapter. It also supports USB's energy saving suspend & resume functions to minimize power consumption, which is especially useful for laptop/notebook users.