This is a 10Base-T to 10Base-FL with SC fiber Ethernet Media converter multimode connector. It works reliably at the distances up to 2km. The Allied Telesis range of Ethernet Media converters provides a complete family of conversion devices, allowing users to extend the size of UTP networks with the use of fiber cabling. Supporting all major fiber connectors, with support for both multi and single mode fiber, these converters can be used to extend networks with up to 15 km of fiber. All the media converters with a UTP connection feature an internal MDI/MDIX switch, allowing the converter to be connected to a PC, hub or switch with a simple UTP cable. The media converters also allow the installer to test the integrity of fiber connection, by forcing the converters to communicate over the fiber cable. This Link Test feature allows installers to check for cable faults without the need for expensive fiber optic test equipment