ENET 2x 10/100Base-T RJ45 to 1x Duplex SC 100Base-LX Single-mode Fiber 20km Stand-Alone Media ConverterENET media converter products offer a cost-effective solution to connecting twisted pair copper connections with fiber optic connections. Their compact and stand-alone design enable versatility while providing efficiency and functionality. ENET offers a wide variety of media converter solutions to fit virtually any network environment ranging from Fast Ethernet through 10G network connections. All ENET media converters include an AC power adapter and are rigorously tested for seamless operation out of the box. ENET media converters come standard with a 3 year warranty.