TDK-Lambda Americas Inc. FLX50N20 Flexible High Voltage - AC-DC Power Supply: 1000W, 50kV, 20mA, Negative Polarity, 2U, Full Rack, AC Input: Single-phase (110-230VAC, 47-63Hz) or in wide-range (100-253VAC, 47-63Hz); CE Mark (EN61010-1); LAN & USB Interface (NON CANCELLABLE or RETURNABLE)