Precision 690 T7400 Dell Dual Cooling Fan Assembly - 9GV1512P5M051 Fans Specification:Big Fan: San Ace 150, Model 9GV1512P5M051, DC 12V ~ 1.2A Smal Fan: Nidec Betav TA450DC Model: B35502-35 - 12V DC ~ 1.40A Compatible Models: Precision 690,Precision T7400,Precision T7400 Workstation,