D link dub e100 usb 20 10100mbps ethernet adapter the d link dub e100 is a hi speed usb 20 10100mbps 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 20 the dub e100 extends the transfer speed of earlier usb fast ethernet adapters to true 10100mbps connectivity as a usb device the d link dub e100 eliminates the need to use an isa pci or pc card sl