The DE-856 Series consists of two models of Ethernet media converters: DE-856ST , DE-856SC. These converters are designed to provide Ethernet media type conversion from 10Base-T to 10Base-FL. These two models support convenient connection to either a straight-through or a cross-over cable on the UTP end. The DE-856 Series converters are cost effective and easy solutions for use in a mixed cabling environment or in extending the network span to include a fiber optic backbone.