Media converters designed to convert from 100Base-TX to 100Base-FX Plug and play installation MDI/MDIX crossover switch allows the converters to connect directly to either a PC, switch or hub LEDs provide network status for both ports Supports full/half duplex operation AT-MC101 converts 100Base-TX (RJ45) to 100Base-FX (ST) AT-MC102 converts 100Base-TX (RJ45) to 100Base-FX (SC) AT-MC103 converts 100Base-TX (RJ45) to 100Base-FX (SC single mode) Can be installed in optional AT-MCR12 rackmount chassis