Compatible with Flower Pet Water Fountain: this new DC USB pump suit for most daisy flower cat water fountain. Round or Square shape that 1.6L, 2.4L or 2.5L cat water fountain, Such as: Ecoastal, November Spring, PEDY, ISYOUNG, YOUTHINK and Hommii Flower Fountains. NOTICE: Not fit for CATIT water fountains. USB Port Design, you can connect to your other USB ports for use. However, we suggest to use the provided adapter which is designed for pet fountain. It's more safe and will extend the lifetime of the pet fountain. New Upgrade DC (Direct Current) Pump, 1.5W low power consumption. Come with a USB power adapter IP68 Waterproof Design, CE certificate, quality assurance, super quiet(< 30 dB). Longlife working up to 20,000 hours Daily Maintenance of Pump: Please clean pump every 2 weeks to extend the life of the pump.