Transition Networks 10GBase-T Copper to Fiber Media ConverterTransition Networks 10GBase T Copper to Fiber Media Converter The x4120 1048 from Transition Networks delivers a powerful, flexible bridge between copper and fiber networks, enabling true 10 Gigabit Ethernet connectivity across disparate infrastructure. This compact media converter provides one 10GBase T RJ 45 copper port and one pluggable 10GBase X SFP+ fiber port, giving IT teams the ability to extend, segment, and upgrade networks without