The Catit Replacement USB pump adapter comes solely and is to be used ONLY with #137389 USB pump with electrical cord (available separately). Suitable for : Catit 2.0 Flower Drinking Fountain (133010) ** Catit 2.0 Mini Flower Drinking Fountain (135006) NOTE : ** For #133010/ 135006 it's important to verify USB pump/ adapter replacement part(s) image against the fountain's existing part(s)