What are the system requirements for Windows installation?
Windows system requirements include Windows 8 (32-bit/64-bit), Windows 7 (32-bit/64-bit), Windows Vista (32-bit/64-bit), or Windows XP (32-bit) SP2 or higher; 512 MB minimum RAM; 200 MB minimum hard disk space for CD and Web Package; and either a CD-ROM/DVD or Internet connection with USB or Network port.
From the official HP LaserJet Pro M127FN Multifunction Printer manual, page 2
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