CL-CM100 The 10/100Base-T Ethernet media converter can be used for extending the transmission distance between two Fast Ethernet devices via fiber cable transparently with no performance degradation.Auto-negotiation allows the converter to operate in either MDI or MDI-X crossover for direct connection to either of the workstation, Switch or Hub.Auto-negotiation allows the converter to operate in either full or half duplex mode.And this equipment also features auto-negotiation in either 10Base-T or 100Base-T mode for dual speed model.