FM-2100 series Gigabit Ethernet media converter adopts switching technology to fulfill media conversion. It complies with IEEE802.3z and IEEE802.3ab standards, and supports two types of media network connections: 1000Base-T and 1000Base-SX/LX. It inter-converts electrical signals of 1000Base-T twisted pairs with optical signals of 1000Base-SX, extending the transmission distance of a network from 100m via copper cables to 80km via fiber optical cables. It supports transmission in multi-mode dual fiber, single-mode dual fiber, single-mode single fiber. www.sopofiber.com