The Dell 13.v1.b3559.f.gn cooling fan from us is brand new,100% compatible with your original laptop cpu fan. Each Dell 13.v1.b3559.f.gn fan should be under strict quality control before leaving the factory, and has passed the authentication of CE, UL, EMC, CQC,ROHS, etc. 30 days money back and 6 months replace warranty.