Klavis NoDrain, Negative - to +5 V Converter, Only for Eurorack housing without 5 V voltage, Offers up to one amp of precise 5 V, Takes its power from where you won’t use it, and gives you back the +12 V power previously used to make 5 V, High efficiency conversion: Every milliamp delivered on the 5 V rail only draws around half as much milliamps on the -12 V rail, Soft-start prevents current drop when switching on, Tolerates wide voltage variations of the -12 V source, Adjustable output voltage, Protected against current overload, input overvoltage, overheating and short-circuit, Dimensions (H x W): 20 x 28 mm