2 pack Gigabit LC to RJ45 Media Converters (with LX transceivers) ^^ 1000Base-LX Single-Mode Module Plug in SFP Fiber Port of media converter, link distance up to 20 kilometers via OS1/OS2/OS3 single mode fiber (SMF, LC, Duplex). ^^ Auto-negotiation RJ45 port supports Half-Duplex/Full-Duplex transfer mode and auto-MDI/MDIX, and 9K-byte jumbo frames. ^^ Plug and play with no software installation or configuration needed. ^^ Easy-to-view LED indicators provide status to monitor network activity easily; Media Converter support wide power supply voltage (100V-240V), operating voltage is 5VDC / 1.0A.; UL Certified.