The company has added three fiber optic versions of its EISC Series of configurable switches, designed to provide longer distances and improved network reliability. The EISC12-100T/FT has 10 twisted-pair ports and two multimode fiber ports with ST connectors. The EISC12-100T/FC is identical except it has SC connectors. The EISC12-100T/FCS also uses SC connectors but with single-mode ports, providing distances up to 15 km.