Genuine Original Transition Networks E-TBT-FRL-1200 12-Port Multi-Port Media Converter. Provides twelve (12) independent media converter connections between Ethernet over twisted-pair copper (twelve RJ-45 connectors) and Ethernet over single mode OR multimode fiber (twelve fiber connectors of one type – selected, according to network requirements). Each media converter port in the multi-port media converter operates independently over one isolated twisted-pair copper/fiber-optic cable link. The media converter port receives and transmits network signals in either full-duplex or half-duplex, depending upon the network devices to which the media converter port is attached.Model Number: E-TBT-FRL-1200Specifications:StandardsIEEE 802.3 1998 EditionCase Dimensions19.0" x 8.5" x 1.5" 483 mm x 216 mm x 38 mmEnvironmentTemperature 0-50°C (32° to 122° F)Storage Temperature -15° to 65°C (5° to 149° F )Humidity 10-95%, non condensingAltitude 0-10,000 feetPower100-240 VAC, 50/60 Hz., 1 Amp (maximum)T(wisted) P(air) LINKSteady LED indicates good link on 10BASE-T CopperF(i)B(e)R LINKSteady LED indicates good link on 10BASE-T FiberACT(ivity)Steady LED indicates 10BASE-T or 10Base activity Dark LED indicates NO 10BASE-T or 10Base-FL activity