Zyxel BPS-120, Power supply, Black, Overload, 120 W, 100 - 240 V, 50 - 60 Hz Zyxel BPS-120. Product type: Power supply, Product color: Black, Power protection features: Overload. Total power: 120 W, AC input voltage: 100 - 240 V, AC input frequency: 50 - 60 Hz. Width: 17.3" (440 mm), Depth: 10.6" (270 mm), Height: 1.77" (45 mm)