be quiet! pure power 11 400w. total power 400 w, ac input voltage 100 - 240 v, peak power 450 w. fan diameter 12 cm, number of fans 1 fan(s). motherboard power connector 20+4 pin atx, motherboard power cable length 45 cm, sata power cable length 450,600,750 mm. purpose pc, power supply unit (psu) form factor atx, noise level (silent mode,