The QPS-20-3.3 from Qualtek Electronics is a AC to DC Converter with AC Input Voltage 90 to 264 V, AC Input Current 500 mA, DC Input Voltage 127 to 370 V, DC Output Voltage 3.3 V, DC Output Current 4 A. Tags: Chassis Mount. More details for QPS-20-3.3 can be seen below.