HP LaserJet 4050 Printer series - Manual (Page 196)

A-16 Specifications
EN
Environmental Specifications
Electrical Specifications
Printer State Power Consumption
(average, in watts)
Printing 330
Standby 22
PowerSave
(default activation time 30 minutes)
20
Off 0
Minimum Recommended Circuit Capacity
100-127 Volt 8 amps
220-240 Volt 4 amps
Power Requirements (Acceptable Line Voltage)
100-127 Volt 50-60 Hz
220-240 Volt 50-60 Hz