GbE Copper to Fiber Converter SM LC 20km This Gigabit Ethernet to fibre media converter is a cost-effective way to extend your network, or extend the distance between two devices by up to 20 km (12. 4 mi. ). Fibre network connections provide greater distance and security, with less electromagnetic interference (EMI) than typical RJ45 copper-based networks, making it perfect for IT professionals and secure setups in government, business, or educational applications. Flexible integration into mixed network environmentsThis versatile copper-to-fibre converter supports standalone operation, or alternatively it can be installed into the StarTech. com Rackmount Chassis (ETCHS2U - sold separately), giving you more options for integration into your existing network. The card module can also be inserted back into the ET91000SM20 enclosure, plus its compatible with enclosures from other StarTech. com ET91000 series media converters (sold separately). The converter features a pre-installed Gigabi