BELKIN F5D5055 USB 2.0 Gigabit Network Adapter - Newegg.com
Amazon.com: Belkin USB 2.0 Ethernet Adapter (F4U047bt),black : Electronics
E-SDS USB 2.0 Extender to RJ45 Over Cat5 Cat5E Cat6 up to 328 Ft, USB Ethernet Extender Over Cat5/5E/6 Supports Windows/Mac/Vista, Plug and Play, No Driver Needed - Yahoo Shopping