What voltage does the HP LaserJet Pro MFP M25-M27 support?
The product uses either 100-127 Vac or 220-240 Vac and 50/60 Hz. The voltage rating is printed on the product label, so you should check it before connecting to a power source. (Page 2)
From the official HP Laserjet Pro Mfp M25 M27 manual, page 2
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