Supermicro CSE-743T-665B. Power supply: 665 W. Width: 452 mm, Depth: 648 mm, Height: 178 mm. Operating temperature range (T-T): 10 - 35 °C, Storage temperature range (T-T): -40 - 70 °C, Operating relative humidity range: 8 - 90 %. Certification: 80 PLUS Bronze, FCC, CUL, TUV, CE, CCC. Ventilation fan(s): 4 x 5000 RPM Hot-swap PWM, External drive bays: 8 x 3.5", 3 x 5.25", Main board size: 304.8 x 330.2 mm (12 x 13 ")