How do I install the printer software on a Windows or Mac computer?
You can download HP Easy Start by going to 123.hp.com/laserjet, clicking Download, and following the onscreen instructions to install the software on both Windows and macOS. For IT managed setups on Windows, visit hp.com/go/upd to download and install the HP Universal Print Driver. (Page 4)
From the official HP Laserjet Managed Mfp E42540 manual, page 4
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