The PSS129-9 from Bel Fuse is a DC to DC Converter with Input Voltage 18 to 144 V, Output Voltage 1 12 V, Output Current 1 9000 mA, Output Power 108000 mW, Operating Temperature -40 to 71 Degree C. Tags: Chassis Mount, Buck/Step down. More details for PSS129-9 can be seen below.