What do I need to check before connecting my HP LaserJet Pro M402 series printer to an electrical outlet?
Ensure your power source matches the voltage requirements of the printer, which are indicated on the printer's label. The model supports either 110-127 Vac or 220-240 Vac with a frequency of 50/60 Hz.
From the official HP LaserJet Pro M402 M403 Printer manual, page 2
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