The FEUSB-XXX is USB2.0 to 100Base-FX POF (Plastic Optical Fiber) converter. The FEUSB-XXX USB 2.0 to 10/100M Fast Ethernet controller is a high performance and highly integrated ASIC which enables low cost, small form factor, and simple plug-and-play Fast Ethernet network connection capability for desktops, notebook PCs, Ultra-Mobile PCs, and any embedded system using a standard USB port. LED indicators are used to display power status of converter, link/ active status of FX port and link/ active status of POF port.