Kettle leads are not fitted they are just plugged in to the relevant port,be it monitor,PSU or whatever.
As to tests if you wanted to get yourself one of these? Ebay. But to be quite honest as you have not told where you bought the Antc PSU apart from that it was Ebay but was it from say Dabs or Ebuyer who both have sites on Ebay.
A link to the actual sale would be useful.