How do I install the printer software on Windows?
Insert the printer CD or launch the downloaded installation file, and the installer will detect your operating system language automatically. Follow the on-screen instructions, and when prompted, select your connection type: USB cable, network, or wireless. If installing from CD and the installer does not start after 30 seconds, browse the CD drive and launch SETUP.EXE. (Page 8)
From the official HP Laserjet Pro Mfp M125 manual, page 8
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