The TSD-100C-12 from Technology Dynamics is a DC to DC Converter with Input Voltage 36 to 72 V, Output Voltage 1 12 V, Output Current 1 8.5 A, Output Power 100 W, Operating Temperature 0 to 55 Degree C. Tags: Rack mount, Buck/Step down. More details for TSD-100C-12 can be seen below.