I want to replace an adaptor for some appliance. The part that is sold in an official website of the product is expensive. So I'm looking for compatible models. Is it usually OK to only consider matching Output Voltage and current? S018QU2400050 is written on the apator. I think 24 stands for 24V and 50 stands for 0.5A and S stands for switching. Do you know what 018QU stands for?